FEBU Enzyme Oxygen Booster
A 7-enzyme laundry booster that eliminates persistent odor, lifts embedded stains, and works with any detergent.
At a glance
- What it does
- Three systems in one scoop. Enzymes break down stains and embedded organic residues, oxygen bleach deoderizes, brightens and whitens through real stain oxidation, zinc neutralizes odor molecules.
- Why it exists
- Your detergent handles surface soil. This booster handles what it misses.
- How to use
- Add to the drum before clothing paired with your detergent for everyday boosting, or dissolve in warm water for soaks and resets. Enzymes work better with time, so longer contact means deeper cleaning.
- WHAT'S IN IT
- 7 enzyme classes, sodium percarbonate (oxygen bleach), sodium carbonate (washing soda), sodium citrate, and a plant-based zinc odor neutralizer.
- What's not in it
- No optical brighteners, no fragrance, no dyes, no fillers, no undisclosed ingredients.
Jump to a section
Why Use an Enzyme Booster
We'll start with some myth-busting: there's no complete laundry detergent product. Every bottle, pod and box on the shelf is a set of trade-offs, and the right ones depend on your household. Fragrance-free liquid because someone has sensitive skin. Hard water. A closet of mostly darks. A smelly teenager. A dog. Each leaves a different gap, and nothing is formulated for your particular combination. Nor can it really be.
A booster works alongside your detergent, closing the gap between what it brings and what your household demands.
Your household is the variable
A detergent is a fixed formula sold to millions of homes, built for an average: average water, average soil, average bodies, average machines. Reasonable way to make a product. Poor description of anyone's actual laundry.
Yours has specifics. Someone whose clothes smell by mid-morning. Water that's harder than the average. A rule about fragrance that took most of the shelf off the table before you started comparing.
No formulator knows any of that. You do. That's the case for a booster: it's the part of the routine you get to add to deliver the cleanest laundry for you and those you care for respective to your unique household.
What you're adjusting for
Detergent lifts soil off the surface of fabric and carries it away, and for lightly soiled loads that's often enough. What it can't do is break down what's bonded into the fiber. That takes enzymes, and most detergents carry one or two classes.
The problem with one or two isn't arithmetic. Stains and odor complexes aren't made of one thing. A smelly armpit stain is sebum and skin protein bound together by eDNA residue. A toddler's pasta dinner is tomato, oil, starch, and food protein in the same spot. An enzyme only cuts what it's shaped for, so a detergent with protease gets partway in and isn't built for the rest.
What's left stays in the fiber. The next wash adds to it.
Nothing goes wrong on any single load, which is what makes this easy to miss. The compounding is the problem. Sebum that doesn't fully clear oxidizes into the yellow at a collar. Residue builds in the weave until it holds new soil against the fabric, which is why clothes get harder to clean the longer you own them. Eventually odor stops responding at all, and by then it isn't this week's sweat, it's a year of deposits with this week's sweat on top.
The gym shirt you throw out because it smells no matter what is usually a fine shirt. Same with towels that stopped absorbing and whites you gave up on. None of that was one bad wash.
Most people arrive at a booster right here, after something has already gone wrong. That's what a reset is for: a heavier dose or a long soak to clear what accumulated, then regular use to keep it from rebuilding and to ensure cleanliness. Both are covered below.
Add whatever else your situation calls for. Oxygen bleach if you're on a liquid, since it can't go in a bottle. Water conditioning if your tap is hard. Odor control if someone in the house needs it.
When you don't need it
Plenty of loads. Lightly worn clothes, sheets after a few days, anything barely used. Your detergent has those, and adding chemistry to clean laundry is money you don't need to spend. We'd rather say that than sell you a scoop.
Or, for a complete and easy routine
Plenty of people would rather not sort loads into ones that need help and ones that don't.
A good liquid detergent plus a scoop of this in every load is a simple, complete routine. The detergent brings the surfactancy it's built for. The booster brings the enzyme breadth, the oxygen bleach a liquid can't carry, water conditioning, and odor control. Between them nothing is missing, and you stop having to think about which load is which.
It sometimes costs you a scoop on the light loads that would have been fine without one. Most find that a fair trade for knowing everything comes out clean.
How to Use the Enzyme Oxygen Booster
Deep Reset
Start here if you're new to FEBU. Most fabric carries months or years of accumulated body oil, detergent residue, and softener buildup, and the booster works to clear it out. Two ways to do it, depending on how bad things are.
Heavy-Duty Reset (machine wash)
This handles most cases on its own to deliver a deep fiber clean.
Deep Soak (for deep-set odors and years of buildup)
Extended contact time allows enzymes to reach residues trapped deep in the fabric that a normal wash cycle and detergent can't get to.
During the first wash or two, trapped odor may surface. That's buildup leaving the fabric, not new odor, and it means the enzymes are doing their job. By load 2 or 3 things smell genuinely clean, meaning they don't smell like anything. Once you're through the reset, switch to Detergent Boost for ongoing use (next section).
Detergent Boost
For stained, heavily soiled, or high body-oil loads. Kids' clothes, kitchen towels, workout gear.
Add the booster to the drum before you load clothes. Your detergent goes wherever it normally goes.
Dosing: Detergent Boost
Enzymes break down body oils, protein soils, and embedded grime that regular washing leaves behind. They work better with time, which is why the pre-soak matters. Light loads with normal soil don't need a booster at all. Your detergent handles those.
Using a detergent without enzymes? Many natural, soap-based, and plant-derived detergents have none. Check the label. If yours doesn't, use 2 scoops on everyday loads, since the booster is your only enzyme delivery in the wash.
Whites Restoration
For dingy whites, yellowed collars, grayed towels and linens.
Machine Wash
Deep Whitening Soak
Hot water activates sodium percarbonate's full whitening power. This is the one protocol where heat matters more than enzyme activity, because the percarbonate is doing the primary work on yellowing. Enzyme performance drops above 140°F, so stay in the 120 to 140 range and you get both.
Yellowing that built up over a year won't reverse in one wash. Expect it to lift over two or three hot treatments, each one taking off another layer.
What Not to Use It On
Silk, wool, cashmere, or any other protein-based fiber.
Protease breaks peptide bonds. That's what makes it work on blood, body soil, and grass. Silk is fibroin and wool is keratin, both proteins, so the same enzyme that clears a blood stain will go after the fiber. Any enzyme product containing protease has this limitation, whether the label says so or not.
Don't panic if a wool sweater has already been through a wash with it. One exposure won't disintegrate anything. Protease works gradually, and the cost is cumulative: thinning, loss of material, faster pilling over many cycles. Wash protein fibers separately with a wool-and-silk detergent and leave the booster out.
If You Have a Top-Loader
All dosing here is calibrated for HE front-loaders, which hold roughly 3 to 6 gallons in the wash cycle. Front-loaders tumble clothes through a shallow pool rather than submerging them, so the working volume is low.
HE top-loaders (impeller, no center agitator) wash in roughly 6 to 10 gallons, about double a front-loader. Add half a scoop to each protocol, so a standard Detergent Boost load takes 1.5 scoops.
Standard top-loaders (center agitator, older models) fill the tub and wash in roughly 17 to 25 gallons, four to five times a front-loader. Add a full extra scoop to each protocol.
That last ratio looks like it should call for more than one extra scoop. It doesn't, because enzymes are catalysts. They aren't consumed as they work, so what matters is having enough enzyme in the load to get through the cycle, not matching concentration gallon for gallon. More water slows the reaction rate. One extra scoop covers the difference across a normal wash cycle.
A warm pre-soak is the other option to help conserve product. It gets more out of the enzymes you're already adding by concentrating them in less water for longer within their optimal temperature range, and contact time does more work here than extra scoops.
Dosing
1 scoop = 10g, about 2 teaspoons.
Three Cleaning Systems in One Scoop
Most oxygen boosters run on one mechanism. Sodium percarbonate dissolves, releases hydrogen peroxide, and oxidizes what it touches for whitening, stain removal, and some deodorizing.
Oxidation is useful, but it only reaches what's exposed. It can't break the bonds holding protein, fat, starch, or embedded odor deposits into the fiber. And while peroxide does neutralize some odor compounds, it's a moderate oxidizer with a short working life, and it does very little against the short-chain fatty acids behind sour, sweaty smells. A booster built on oxidation alone stops well short of what a scoop of powder is capable of doing.
So this one runs three systems. Enzymes take the deposits apart. Oxygen bleach oxidizes the color structures and organics they expose. Zinc binds the odor molecules that oxidation doesn't touch, so they rinse away instead of settling back into the fabric. Each system opens up work the next one can do for a more comprehensive approach to odors and stains.
System 1: 7-Enzyme Panel
Enzymes are biological catalysts. Each one fits a specific type of molecular bond, breaks it, and moves on to the next. Chemical oxidizers get used up on contact. Enzymes keep going for the whole cycle, which is why contact time matters so much.
Most detergents carry zero to two enzyme classes. Plenty of oxygen boosters carry none and rely entirely on percarbonate. This one has seven, each matched to a different category of soil: proteins, fats, starches, gums, fruit pigments, fabric fibers, and the embedded deposits behind persistent odor.
One scoop covers all of them, so you don't have to identify what you're dealing with before you wash it.
See the full breakdown in The Seven-Enzyme Panel below.
System 2: Oxygen Bleach
Sodium percarbonate splits into sodium carbonate and hydrogen peroxide the moment it hits water. The peroxide is a moderate oxidizer. It attacks the molecular color structures that make a stain visible, which brightens whites and refreshes colors as the cycle runs.
Chlorine bleach strips dye and weakens fibers on contact. Hydrogen peroxide works more gently and breaks down into water and oxygen, leaving nothing behind. Hence, why oxygen bleach is a color-safe bleach.
The oxygen bleach also handles part of the odor problem by oxidizing volatile organic compounds floating in the wash water.
System 3: Zinc-Based Odor Neutralizer
Sodium Zinc Polyitaconate is a plant-based zinc compound, and it handles odor differently than the other two systems. Instead of breaking odor molecules down, it grabs onto them and holds. The molecule can no longer evaporate, so it rinses out of the fabric instead of reaching your nose.
That matters because odor isn't one thing. The sour note in gym clothes, the ammonia in urine, the sulfur smell in a musty towel. All different compounds, and oxidation is better at some than others. Zinc works across the whole range.
It also solves a timing problem. When the enzymes break down embedded deposits, the odor compounds trapped inside get released all at once. Without something to hold them, they can settle back onto the fabric. The zinc catches them on the way out.
No fragrance involved. Nothing is being covered up.
Independent laboratory testing confirms it works across a wide range of odors, including body odor, urine, sweat, foot odor, and pet messes.
Why Three Systems Matter with your Detergent
The systems reinforce each other, and amplify the cleaning power of your detergent.
Enzymes are the only part of this that takes embedded deposits apart efficiently. Each one is a catalyst shaped to cut a specific target, and it keeps cutting for the whole cycle. Oxidation degrades organic matter too, but it's non-specific and slow at wash temperatures, so it tends to bleach a stain's color while much of the deposit stays in the fiber. That work then makes the other two systems more productive: better contact for the oxygen bleach, and released odor compounds for the zinc to bind, since the zinc only reaches what's loose in the water.
Your detergent is the fourth piece and isn't optional. Something has to carry all this new freed material out, and surfactants are what do it. Without enough of them it stays suspended and can settle back into the fabric. That's why the booster has no surfactants of its own and why the dosing guidance keeps pointing back at your detergent.
Together, a single cycle covers a lot of ground. Detergent lifts what's loose on the surface. Seven enzymes work on protein, fat, starch, gums, fruit pectin, damaged fiber, and the residue behind persistent odor. Oxygen bleach breaks down stain color. Zinc holds the odor compounds that come free. The surfactants carry it out.
Most detergents bring one or two enzyme classes to that, if any. They lift surface soil well. What they lack is the range to break down what's bonded into the fiber, which is where stubborn stains and returning odor live. It's why a gym shirt can smell clean out of the dryer and sour an hour later.
The Seven-Enzyme Panel
Laundry soil isn't one substance. It's proteins, fats, starches, gums, fruit pigments, damaged fiber, and embedded organic residue, and each one needs a different enzyme. Protease can't touch a fat molecule. Lipase can't touch starch. The chemistry is specific in a way most people never think about.
Real stains complicate this further, because they're almost never one thing. A toddler's bib after spaghetti night is tomato (pectin, pectate lyase), olive oil from the sauce (fat, lipase), pasta residue (starch, amylase), and food protein plus drool (protease). Four enzyme classes for one stain. A detergent carrying only protease gets part of it. A detergent with no enzymes pushes the surface around and leaves the rest bonded to the fabric.
That's the case for breadth. Not one powerful enzyme, but coverage across the range of soil a household actually produces.
DNase
Persistent Odor (aka Permastank) and GrayingGym clothes that still smell after washing, musty towels, activewear, dingy grays and whites that don't respond to bleaching
DNase is the differentiator in this formula. It breaks down a residue that builds up deep in fabric over months of wear and washing, one that acts like glue.
That glue holds onto two things. Odor compounds, which is why gym clothes keep smelling no matter how you wash them. And dirt, which it pins against the fiber where your detergent can't lift it. That trapped dirt is a real part of why whites go dull and colors look tired.
Break the glue down and both come loose. It also clears the spots where new dirt would have stuck, so less builds back up next time.
Almost no consumer laundry product includes it.
Protease
Protein StainsBlood, grass, body soil, collar grime, sweat deposits, egg, milk
Protein is a chain, and protease cuts the links. Long chains that cling to fabric become short pieces that rinse out.
Most detergents carry protease. What they don't carry is everything it needs to work with. Almost nothing you spill is only protein. A collar is sweat protein bound up with sebum, so it needs protease and lipase. Grass is protein, plant pigment, and pectin, so protease, pectate lyase, and cellulase. Baby formula is protein, fat, and sugar together, so protease, lipase, and amylase. Protease on its own gets partway into a stain like that and stops at the parts it can't cut.
Seven enzymes means whatever else is in the stain has something working on it too, in the same cycle, on the same spot. Each one clears what's blocking the others.
Lipase
Fat & Oil StainsCooking oil, sebum, pit stains, butter, salad dressing, cosmetics residue
Fat doesn't dissolve in water, which is the whole problem. Lipase cuts fat molecules apart into fragments the wash can carry away.
Body oil is the most common soil in laundry. Every shirt you wear collects it from your skin, and it builds up in collars, cuffs, and underarms long before you see anything. The yellowing at a collar is oil that was never fully removed, slowly oxidizing.
Lipase has quietly vanished from a lot of detergents. Many brands dropped it and leaned harder on surfactants. Surfactants lift oil off the surface. They can't cut the molecule. If pit stains and collar rings keep surviving your wash, that's usually why.
Amylase
Starch StainsPasta, rice, baby formula, gravy, bread, cereal, potato
Starch is a long sugar chain that behaves like paste. Amylase cuts it into short fragments that dissolve.
When wet, starch spreads. When dry, it sets into a film that grips the fiber and traps whatever else was in the spill. This is why food stains get harder to remove after a trip through the dryer, and why a stain can look gone and still leave a stiff patch behind.
Starch rarely arrives alone. Gravy is starch and fat. Formula is starch, protein, and fat. Amylase clears the film so the rest of the panel can reach what's underneath.
Cellulase
Fabric Care & Microfiber ManagementPilling, fuzziness, graying, loss of color vibrancy, broken microfibrils that trap residue
Cellulase targets the fabric rather than the soil, and it does so constructively. Cotton and cotton blends develop broken microfibrils on the surface after repeated washing, tiny fiber fragments that scatter light and make everything look faded and fuzzy. Cellulase trims them back, which restores the smooth surface that makes color read as vivid.
There's a second effect worth knowing about. Those broken fibrils create rough, irregular surfaces where organic matter and odor-causing deposits can anchor. Removing them reduces the available surface area for buildup, so fabric stays fresh longer between washes.
Clothes washed with cellulase look newer longer. Whites can look whiter, and brights brighter. The dye hasn't changed. The surface has been maintained.
Mannanase
Gum-Based ResiduesIce cream, cosmetics, food thickeners, toothpaste, hair products
A lot of everyday products contain gums that make them thick and creamy. Guar gum in ice cream, stabilizers in makeup and toothpaste, thickeners in sauces and dressings. Mannanase breaks those gums down.
On fabric, gum dries into a sticky residue. It doesn't look like much, but it holds onto dirt and it doesn't rinse out with normal washing. Ice cream and makeup stains that seem to fade and then keep coming back are usually gum that stayed in the fiber.
Pectate Lyase
Fruit & Wine StainsBerry stains, red wine, fruit juice, tomato, jam
Fruit contains pectin, the natural substance that makes jam set. Pectate lyase breaks it down.
When berries or juice hit fabric, the pectin acts like an adhesive and glues the color in place. That's why fruit stains behave differently than most spills. You can wash the surface clean and the color stays, because the color was never sitting on top of the fabric.
Break down the pectin and the color releases, so the oxygen bleach can finish it off.
7 enzyme classes. 3 cleaning systems. One scoop.Add the Enzyme Oxygen Booster to any detergent, any machine.
Shop the Booster
Cleaning Guides by Use Case
Gym Clothes and Activewear That Still Smell
Polyester, nylon, and spandex have microporous surfaces. Body oil, sweat residue, and skin cells work their way into those pores over months of wear and accumulate there. Detergent surfactants clean the outside of the fiber. They can't get into the pore structure, so whatever is lodged inside stays lodged inside, and the smell comes back within an hour of putting the shirt on. Straight out of the dryer, if it's bad enough.
You've probably already tried more detergent, hotter water, and something scented. None of those reach the deposits.
Enzymes do, because they work on the deposits themselves rather than trying to wash them off. DNase degrades the residue that binds the whole deposit together deep in the fiber, which is the part nothing else in your laundry routine touches. Protease breaks down the protein fraction, which is most of what sweat leaves behind. Lipase handles sebum and body oil.
Where you start depends on how long this has been going on. If it's a recent problem or a few garments, start with the reset. If you've been rewashing the same shirts for months and nothing has worked, go straight to the soak.
Recent or mild. Heavy-Duty Reset. 2 scoops for a regular load, warm water, pre-soak on, longest cycle with extra rinse, paired with a heavy-soil dose of detergent.
Long-standing. Deep Soak first. 1 scoop per gallon of warm water, 1 to 6 hours, overnight if it's been months. Then run the Heavy-Duty Reset. Years of buildup need contact time a wash cycle can't give the enzymes.
Then maintain. Detergent Boost. 1 scoop in the drum with your detergent on workout loads, pre-soak on. Deposits rebuild if you stop.
Most people are in the first camp and get there in one wash. If you're not sure which you are, start with the reset. You'll know after one cycle whether it needs the soak.
Towels That Stopped Absorbing and Started Smelling
Two things go wrong with towels, and most people only notice one of them.
The first is coating. Fabric softeners and anything containing quaternary ammonium compounds leave a thin waxy layer on the fiber. That's the mechanism behind the softness. But on a towel it defeats the entire purpose, because the coating repels water.
The second is buildup. Towels sit damp for hours between uses, and that's exactly the condition under which organic deposits accumulate deep in cotton fiber. Body oil transferred during drying, skin cells, and the residue they leave behind. Same mechanism that ruins gym clothes, which is why a towel can look clean and still smell sour.
The enzymes handle both. Lipase breaks down the fatty component of softener coating and body oil. Protease takes the protein residues. DNase reaches the deposits trapped deep in the fiber where the smell actually lives. Whatever organic residue survives all that gets oxidized by the percarbonate.
Where you start depends on which problem you have. If they're just not absorbing, that's coating and a reset clears it. If they smell sour even when clean, the buildup is deeper and needs the soak.
Not absorbing. Heavy-Duty Reset. 2 scoops for a regular load, hot water, pre-soak on, longest cycle with extra rinse, paired with a heavy-soil dose of detergent. You'll notice the difference the first time you dry off.
Sour or musty. Deep Soak first. 2 scoops per gallon of hot water, 1 to 6 hours. Then run the Heavy-Duty Reset. The deposits behind that smell sit deep in the cotton and need contact time.
Then maintain. Stop using fabric softener on towels. Detergent Boost, 1 scoop, in a periodic hot wash keeps them absorbing and stops the buildup coming back. Towels that stay damp for long stretches need it more often.
Pet Odor and Pet Bedding
Pet messes are a mix, and the mix is why they're stubborn. Urine is mostly urea and salts, with uric acid that crystallizes as it dries and stops dissolving in water. Fur carries sebum, which is where most of the smell of a dog actually comes from. Bedding collects saliva, dander, food, and the same embedded residue that builds up in gym clothes.
That's four different problems. Lipase works on the sebum and body oils. Protease handles the protein in saliva, dander, and food residue. DNase breaks down the residue holding odor deep in the fabric. And the zinc binds the ammonia directly, which is the part you smell most.
Soaking matters more here than almost anywhere else. Dried uric acid needs time in water to redissolve before anything else can reach it, and no wash cycle is long enough.
Regular pet laundry. Detergent Boost. 1 to 2 scoops depending on load size, warm water, pre-soak on.
Soiled bedding or blankets. Heavy-Duty Reset. 2 scoops, warm water, pre-soak on, longest cycle with extra rinse, heavy-soil dose of detergent.
Urine-soaked or long-standing odor. Deep Soak first. 1 scoop per gallon of warm water, 2 to 6 hours, overnight if it's set in. Then run the Heavy-Duty Reset.
Whites Restoration and Yellowing
White fabric goes bad in two directions, and they don't have the same cause.
Yellowing is usually body oil. Sebum works into collars, cuffs, and underarms, and what doesn't come out oxidizes over time into a yellow-brown that sits in the fiber. Optical brighteners can hide it for a while. Many conventional detergents include them, UV-reactive dyes that make fabric glow bluer under sunlight and fluorescent light. They fade with time and UV exposure, and as they go, the staining underneath starts to show.
Graying is held soil. A residue builds up in fabric over repeated wear and washing that acts like an adhesive, gripping dirt against the fiber where detergent can't lift it. Nothing looks stained, exactly. Everything just looks tired.
Three systems handle it. Lipase cuts the oxidized body oil that causes yellowing. DNase breaks down the residue holding gray soil in place so it can finally rinse out. And percarbonate oxidizes the stain color that's left, which is actual whitening rather than a dye that fakes it.
Where you start depends on how far gone they are. General dullness responds to the machine wash. Deep yellowing that's been building for a year wants the soak first.
Dingy or graying. Whites Restoration machine wash. 2 scoops for a standard load, 3 for large or XL, hot water 120 to 140°F, pre-soak on, with detergent.
Deeply yellowed. Deep Whitening Soak first. 2 scoops per gallon of hot water, 1 hour to overnight for severe cases. Then run the machine wash above.
Then maintain. Detergent Boost, 1 scoop, on regular white loads. Warm or hot water, pre-soak on. Whites stay white when the oil and soil never get a chance to build.
Expect this to lift over a few hot treatments rather than one. Each cycle takes off another layer. Slower than an optical brightener, which fakes it instantly, but the result holds under any lighting instead of only the kind with UV in it.
Months of yellowing lift progressively across two or three hot treatments. Each cycle takes off another layer. Slower than a brightener, which fakes it instantly, but the result holds under any lighting.
Using the Booster on Darks
It's safe on darks. Warm is fine for most loads. If you're protective of something, wash it cold and turn the pre-soak on to give the enzymes time to work.
The reason it's safe comes down to how the formula is built. Most oxygen bleach products warn you off darks because percarbonate is their engine and hot water is how they get it running. Here the enzymes do the primary work, and percarbonate sits at roughly a quarter of the formula as a supporting system. There's simply less of it in the scoop, and it isn't being driven hard.
That matters because two things in a wash can pull dye out of fabric. Heat opens up the fiber and lets dye drift, which happens with any detergent and no bleach involved. And peroxide works on color in dye the same way it works on color in a stain. A percarbonate-heavy product in hot water runs both at full strength. This one, at warm, runs neither very hard.
Cold is there when you want more margin. A favorite graphic tee, something you've had for years, anything you'd rather not gamble on. Turn the pre-soak on and contact time covers what the heat would have done, so you're not giving up cleaning power to be careful.
There's an upside here too. No optical brighteners in the formula. Those are the UV-reactive dyes in a lot of conventional detergents that make whites glow bluer, and they don't discriminate. They deposit on dark fabric right along with everything else, where that blue-white cast sits on top of black and navy as a dull haze. It's part of why darks start looking gray after enough washes. Nothing here is adding that back.
Warm for everyday darks. Normal cycle, pre-soak on for best results.
Cold for anything precious. Pre-soak on, and let the enzymes take their time.
Use as needed. Normal-soil darks are fine with detergent alone. Save the booster for stains, body oil, or odor that isn't coming out.
Skip hot soaks on darks. Hours of heat plus oxidation is the one combination worth avoiding.
Any percarbonate product will have some cumulative effect on dye across dozens of hot washes. That's oxidation chemistry and no formula gets around it. Water temperature is the variable you control, and cold water effectively removes the risk while keeping the enzymatic cleaning intact.
Kids' Clothes and Baby Laundry
No fragrance, no dyes, no optical brighteners. Those are the additives most commonly removed from detergents marketed for sensitive skin, and fragrance in particular is a frequent contact allergen. What's left in the formula is enzymes, oxygen bleach, and a zinc odor neutralizer, all of which rinse out.
The cleaning side is a mixed-soil environment, which is what makes kids' laundry hard. Formula is protein, fat, and sugar together, so protease, lipase, and amylase. Food stains bring starch and often fruit pectin. Grass is protein, pigment, and plant fiber. Spit-up is protein and fat. One scoop covers all of it without pre-treating or keeping separate stain products around.
Everyday loads. Detergent Boost. 1 scoop with detergent, pre-soak on. Warm water for heavy food or formula staining.
Heavily soiled loads. Heavy-Duty Reset. 2 scoops, warm water, pre-soak on, longest cycle with extra rinse, paired with a heavy-soil dose of detergent. This is the one for blowouts, a week of bibs, or anything that's been sitting in a hamper.
Set-in stains. Deep Soak. 1 scoop per gallon of warm water, 1 to 2 hours, then run the Heavy-Duty Reset. Formula and spit-up that dried in respond better to contact time than to another wash cycle.
Check the label on wool and silk. Merino base layers, wool blankets, and silk gifts shouldn't go through this. Protease breaks down protein, and those fibers are protein. Everything cotton, bamboo, and synthetic is fine.
Additional Uses
The booster is built for laundry, but the chemistry applies to a few situations the standard protocols don't cover.
Sports Equipment Fabric Components
Helmet liners, knee pad sleeves, shin guard straps, gear bags, boxing gloves, hockey gloves, goalie pad liners. These carry more embedded residue than anything else you own, because they see heavier sweat loads and get washed a fraction as often.
Machine-washable items. Heavy-Duty Reset. 2 scoops, warm water, pre-soak on, longest cycle with extra rinse. Gear bags can go straight in.
Anything that can't go in the machine, or won't come clean. Deep Soak. 1 scoop per gallon of warm water, 1 to 6 hours. Rinse thoroughly and air dry, or run the Heavy-Duty Reset if it's machine-safe.
Thrift Store and Vintage Clothing
Secondhand clothing arrives carrying whatever the previous owner's routine left behind. Detergent buildup, softener coating, body oil, and often a musty storage note on top. A reset before first wear clears it.
How far you go depends on the age of the garment.
Modern secondhand. Anything from the last couple of decades in sound condition. Heavy-Duty Reset, 2 scoops, warm water, pre-soak on, longest cycle with extra rinse. If the smell survives that, follow with a Deep Soak, 1 scoop per gallon of warm water, 1 to 6 hours.
Genuine vintage. Be conservative. Cotton and linen weaken with age, and this formula contains cellulase, which works on cellulose. On sound fabric that's how you get depilling and color revival. On fabric that's already thinned by decades of wear and light exposure, extended contact isn't worth the risk. Older dyes also tend to be poorly fixed and can bleed. Start with a Detergent Boost, 1 scoop, cool water, and see how it comes out. Skip long soaks and skip hot water.
Never on wool, silk, or cashmere, at any age. Protease breaks down protein and those fibers are protein.
If something is genuinely old and you care about it, hand wash it with a detergent made for delicates and leave the booster out. Nothing here is worth losing the garment over.
Seasonal Storage Prep
Clothes put away with residual body oil or detergent buildup still in the fabric will develop musty odor and yellowing over months in a closet. Washing with the booster before storage clears the deposits that cause it. One scoop with detergent on the final wash before packing. Run the Whites Restoration protocol first on anything white.
Musty Items from Storage
Holiday linens, guest room bedding, camping gear, sleeping bags that sat in a garage for a season. The stale smell comes from organic deposits slowly degrading while the fabric sat.
Most items. Heavy-Duty Reset. 2 scoops, warm water, pre-soak on, longest cycle with extra rinse.
Bulky items or heavy odor. Deep Soak. 1 scoop per gallon of warm water, 1 to 6 hours. Sleeping bags and anything that won't fit a machine can soak in a bathtub. Rinse thoroughly.
Using the Booster as a Washing Machine Cleaner
Washers accumulate the same things your clothes do. Body oil, detergent residue, fabric softener buildup, and lint collect in the gasket folds, the dispenser drawer, the drum seal, and the pump filter. Front-loaders and HE top-loaders get it worse because they hold moisture between loads.
The booster works here for the same reason it works on laundry. Enzymes break down organic residue, percarbonate oxidizes what's left, and the zinc handles odor compounds. Run it in an empty drum and there's no fabric competing for it.
What matters most is the part you do by hand. The gasket folds, dispenser drawer, and pump filter don't get much water exchange during a cycle no matter what's in the water. Wipe them out and clear the filter first. That's where the buildup actually sits.
Medical Scrubs and Restaurant Uniforms
Long shifts in warm conditions, and most scrubs are polyester or a poly-cotton blend, which means the same embedded odor problem as activewear. Add blood, body fluids, food grease, and starch residue and you have about every soil type at once.
Regular loads. Heavy-Duty Reset. 2 scoops, hot water, pre-soak on, longest cycle with extra rinse, with a heavy-soil dose of detergent. Hot water costs you some enzyme activity, but for anything that contacted body fluids or raw food, that's the right trade.
Set-in odor. Deep Soak. 1 scoop per gallon of warm water, 1 to 6 hours, then run the Heavy-Duty Reset hot. Keep the soak warm rather than hot so the enzymes can work, and let the wash handle the temperature.
A note on scope. This is a cleaning product, not a sanitizer, and it doesn't make disinfection claims. If your workplace has a laundering policy for scrubs or requires a linen service, follow it. This is for personal laundering where that's what you're doing anyway.
How to run it
- Empty the drum. No clothes, no rags.
- Wipe the gasket folds and dispenser drawer.
- Add 2 scoops directly to the drum.
- Run a hot cycle with extra rinse. If your machine has a tub clean or self-clean setting, use it.
- Leave the door open afterward so it dries out.
Cadence. Monthly is reasonable, more often if you wash mostly cold or run a lot of heavily soiled loads.
What to expect. Debris in the drum or filter after the first run is normal on a machine that hasn't been cleaned in a while. If musty smell persists, it's usually the gasket or the filter rather than the drum, and that's a hand-cleaning job.
What to Expect
If You Started with a Deep Reset
This is the faster path. The Heavy-Duty Reset wash or a Deep Soak followed by one clears most accumulated buildup in a single treatment. Trapped odor may surface during the first wash or two, which is the buildup leaving the fabric. By load 2 or 3, things smell genuinely clean. Then you switch to Detergent Boost and stay there.
If You Started with Detergent Boost Only
Slower, and the first wash won't be dramatic. The enzymes go to work immediately, but months or years of body oil and detergent residue don't clear in one 45-minute cycle.
Somewhere around the third to fifth wash it becomes obvious. Fabric smells clean rather than fragranced, towels absorb, whites read brighter under every kind of light, and colors look more saturated.
Progressive, not instant. Each wash takes off another layer. If you'd rather not wait, run a Deep Reset and skip ahead.
Using It as a Soak
Soaking is what you reach for when a wash cycle hasn't been enough. One to six hours of contact versus 30 to 60 minutes gives the enzymes room to finish what they start, which is why it clears odor that survives repeated washing.
Dose. 1 scoop per gallon of water. A standard bucket is about 2 to 3 gallons, a bathtub with a few inches in it is closer to 10.
Temperature. Warm, around 105 to 120°F, which is roughly what a hot tap gives you. Enzyme activity drops off above 140°F, so hotter isn't better here. Start warm and let it cool on its own. The exception is whites, where the Deep Whitening Soak uses hot water on purpose because percarbonate is doing the primary work and heat is what drives it.
Stir once or twice. Enzymes work where they make contact, and a still bucket lets the solution stratify. A quick agitation partway through redistributes it.
Follow with a wash. Don't drain and rinse. Run the Heavy-Duty Reset with detergent at its full dose. The soak frees the material and the wash carries it out. Skip that step and freed debris settles back onto the fabric with no surfactant to suspend it.
Hard water. A long soak gives calcium and magnesium more time to react with fatty acids and form insoluble deposits, which show up as a waxy grayish film. The sodium citrate in the formula binds those minerals, and for moderately hard water that's enough. Above about 120 ppm a multi-hour soak can outrun it. If you see film or feel waxiness afterward, add your detergent to the soak so its chelants and surfactants help keep things suspended.
Not on wool, silk, or cashmere. Extended protease contact is the worst case for protein fibers.
Long-standing problems sometimes want a second soak after the first wash. You'll know from the first one whether it's working.
What You Might Notice When You Start
The first several loads are a clearing phase regardless of which path you took. The enzymes are breaking down deposits that took months or years to accumulate, and as that material comes loose you may run into things that seem wrong but aren't. Soaks produce more intense versions of everything below, since the enzymes get hours instead of minutes.
Soak water changes color. Sheets, pillowcases, and athletic wear turn it yellowish. Gym gear produces gray-brown murk. Towels with years of softener on them can leave a waxy film on the surface. All of it is material leaving the fabric. Water that looks unchanged after two hours means either the fabric was already clean or the booster didn't dissolve properly.
Musty or earthy smell. Polysaccharide fragments and trapped volatile compounds releasing from deep in the fabric all at once. They were locked inside the deposit structure, and taking that structure apart lets them go. One-time release, not ongoing, and it fades as the reservoir empties. In a soak you'll smell it off the water. In-wash you'll notice it on the fabric afterward.
Sour or rancid smell. Free fatty acids from lipase working through accumulated body oil. Short-chain fatty acids are volatile and smell sour. The zinc captures most of them, but the heaviest phase can produce more than a single cycle's worth of zinc can handle.
Sulfurous or egg-like smell. Less common. Protease breaking down protein deposits containing sulfur-bearing amino acids. Shows up mostly on heavily soiled items, gym gear with months of embedded sweat protein or kitchen textiles with food protein buildup. Alarming, brief.
Graying on whites and lights. Same mechanism, visible instead of olfactory. Breakdown products redepositing because there wasn't enough surfactant present to carry them out.
Waxy or stiff feel. Free fatty acid redeposition, worse in hard water where the fatty acids combine with calcium and magnesium. Most noticeable on pillowcases, sheets, and undershirts, anything with heavy sebum accumulation.
Visible flecks or debris. Physical fragments of accumulated deposits, usually in the first load or two or right after a machine cleaning cycle. Can show up on fabric or in the drain pump filter.
Every one of these traces back to the same thing: deposits coming loose faster than the wash can carry them away. The fixes are the same across the board.
- Run your detergent at its full recommended dose for the first 5 to 7 loads, even if you normally use less. More surfactant means more carrying capacity.
- Pull clothes out promptly and leave the washer door open. Matters more during the clearing phase, since redeposited material can produce secondary odor if fabric sits damp in the drum.
- Front-loader owners should run the machine-cleaning cycle first (see Using the Booster as a Washing Machine Cleaner). Better to flush the machine's reservoir in one empty cycle than have it release onto your clothes over the next month.
- A Deep Reset compresses all of this. Heavy-Duty Reset or Deep Soak clears the buildup in 2 to 3 loads instead of 5 to 7.
- Symptoms peak around loads 1 to 3 and resolve by 4 to 6 on the in-wash path at full detergent dose.
- If it persists past that, something else is going on. Get in touch and we'll work through it.
Whites Restoration Timeline
Expect visible whitening after the first hot treatment, with progressive brightening across two or three more hot washes or soaks. Severe yellowing built up over a year or more reverses through genuine stain oxidation, layer by layer. Slower than an optical brightener, which fakes whiteness instantly, but the result is real and holds under any lighting rather than just fluorescent.
If You Have Hard Water
About 85% of American households have some degree of hard water, and it's already handled here. The short version: two ingredients in the formula bind the minerals before they can interfere, and you don't need to do anything unless your water is unusually hard.
What Hard Water Actually Does
Calcium and magnesium in your water compete with the cleaning. They latch onto surfactant molecules and blunt their ability to lift soil, they occupy the sites enzymes need to work, and over time they precipitate onto fabric and leave it gray, stiff, and rough. Whites and towels show it first.
The enzyme point is the one that matters most here. This formula is built around seven enzymes doing the primary cleaning work, so anything suppressing enzyme activity costs you more than it would in a percarbonate-only product. Protecting them isn't a nice-to-have.
What the Booster Does About It
Two ingredients, working differently.
Sodium carbonate, the largest component in the formula, precipitates hardness. Carbonate ions grab calcium and magnesium and drop them out of solution, so they're no longer free to interfere. Agitation keeps the particles suspended and the drain carries them out.
Sodium citrate sequesters instead, binding the same minerals into soluble complexes that stay dissolved and rinse away cleanly. That's the more useful of the two where water sits still, since nothing forms that could settle back onto fabric.
Between them, and alongside a fully dosed detergent, water up to about 180 ppm or 10.5 grains per gallon is covered. The goal isn't zero hardness. It's getting the minerals down below the level where they interfere, and that happens well before you've removed all of them.
Worth knowing: most oxygen boosters skip this entirely. They're percarbonate and soda ash, with nothing built in to manage minerals. If you have hard water and your current booster has felt like it underdelivers, that's a likely reason.
If Your Water Is Very Hard
180 to 250 ppm (10.5 to 15 gpg). Add a second scoop. Two on a standard load, three on a large one. That doubles the builder load and it's the simplest fix since you already have it.
Above 250 ppm (15 gpg). A third scoop gives diminishing returns, since the added alkalinity starts working against the enzymes before it meaningfully improves the softening. A dedicated chelant is the better move: one tablespoon of sodium citrate in the drum, or a product like Calgon Water Softener. Either binds minerals without pushing the pH up.
How to Test Your Water
Municipal suppliers publish annual water quality reports with hardness data. Search your city name and "water quality report." On well water, test strips from any hardware store give you a reading in seconds. You're looking for grains per gallon or parts per million.
Enzyme Soaking vs. Laundry Stripping
Laundry stripping has had a viral moment. If you've seen the videos of brown bathtub water after soaking supposedly clean clothes and wondered whether this is the same thing, here's the difference.
What Stripping Is
A long hot soak, usually in a bathtub, using borax, washing soda, and either oxygen bleach or powdered detergent. Recipes vary, but a quarter cup of each in a full tub for four to six hours is typical.
Borax and washing soda are builders. They bind hard water minerals and push the pH up, which loosens accumulated residue and lets it release. The oxygen bleach adds oxidation on top. It's real cleaning chemistry and it does remove things.
As far as the brown water goes, some of it is genuine soil, softener buildup, and mineral residue. A good portion is dye bleeding out of the fabric, because a hot high-pH bath is very effective at pulling color from textiles. And anything dissolved into ten gallons of clear water looks alarming regardless of how much of it there is.
The color isn't a measure of how dirty your laundry was. It's a measure of what a hot alkaline soak pulls out of fabric, and dye is part of that.
How Enzyme Deep Soak Differs
Stripping gets the instinct right. Some buildup needs more than a wash cycle, and hours of contact is genuinely what it takes. The recipe just predates better tools.
Borax and washing soda work by force. High pH loosens what it can and pulls it into solution, which handles surface buildup well. What it can't reach is the deposits worked deep into the fiber over months of wear, because those aren't sitting on the fabric waiting to dissolve. They're protein, fat, and organic residue bonded in place.
That's the part enzymes are built for. Protease cuts the protein into fragments. Lipase splits the fats. DNase breaks down the residue binding it all together, which no stripping recipe includes and which is usually why a strip leaves clothes looking better and smelling the same a week later. Seven classes, each cutting one thing, over the same hours a strip would have taken.
Same idea, better chemistry. One to six hours, most cases on the low end. See Deep Soak for the protocol.
When Each Makes Sense
Strip it if you're dealing with heavy mineral scale from years of hard water. Enzymes don't touch minerals, so stiff, chalky towels on very hard water are the one case where those builders are doing something a soak can't.
Soak it for anything organic. Odor that keeps coming back, towels that stopped absorbing, gym clothes that smell an hour after you put them on, workwear with months of body oil in it. That's the majority of what sends people to a stripping recipe in the first place.
Do both if you've got mineral scale and embedded odor at once. Strip first to clear the minerals, then soak to break down what the strip couldn't reach. Uncommon, but it happens in households with very hard water.
How It Compares
Most oxygen boosters are one mechanism. Percarbonate dissolves, releases hydrogen peroxide, and oxidizes what it contacts. That's real chemistry and it does a real job on whitening and surface stains. It also needs hot water to work, which is why those products come with warnings about darks.
This one is built differently. Enzymes lead the cleaning, because they're the only thing here that takes embedded deposits apart rather than bleaching what's on the surface. Percarbonate stays in as a supporting system for whitening, stain color removal, and oxidation. And odor gets three mechanisms at once: the enzymes remove the deposits producing it, the percarbonate oxidizes some of what's released, and the zinc binds the compounds neither of them reaches.
That's the difference the table below is describing. One mechanism doing everything, against four working on different parts of the problem.
| Feature | FEBU Enzyme Booster | Conventional Oxi-Booster |
|---|---|---|
| Enzyme classes | 7 named classes: Protease, Lipase, Amylase, Cellulase, Mannanase, Pectate Lyase, DNase | None, or unspecified "enzyme blend" |
| Odor elimination | 3 systems: enzymes + oxidation + zinc neutralization | 1 system: oxidation only |
| Whitening & Yellow | Lipase cuts oxidized body oil, percarbonate oxidizes what remains | Percarbonate oxidation only |
| Graying | DNase breaks down the residue holding soil in the fiber | Not addressed |
| Works in Cold | Yes, enzymes run at any temperature | Limited, percarbonate needs heat |
| Safe on darks | Yes, enzyme-forward formula with a low percarbonate load and no optical brighteners | Generally not recommended |
| Optical brighteners | None | Often included |
| Fragrance | None | Often included |
| Hard water chelation | Sodium citrate | Rarely included |
| Ingredients disclosed | Every ingredient named and explained | "Proprietary blend" common |
What the Table Means
Embedded deposits. This is the whole difference. Oxidation bleaches the color out of a stain but leaves the material in the fiber, which is why a treated stain can come back and why fabric can look clean and still smell. Enzymes cut the deposit into fragments small enough to rinse away, so it's gone rather than faded.
Odor. Three mechanisms instead of one. Enzymes remove the deposits producing the smell, percarbonate oxidizes some of what gets released, and zinc binds the compounds neither of those reaches, including the short-chain fatty acids behind sour, sweaty odor that peroxide barely touches.
Yellowing and graying. Two different problems, and most products treat them as one. Yellowing is largely oxidized body oil, which is a lipase job followed by oxidation. Graying is soil held against the fiber by accumulated residue, which is what DNase breaks down. A percarbonate-only booster can lighten both to a degree and resolve neither.
Cold water and darks. These go together. Because the enzymes carry the cleaning, the product still works with the heat off, and with the heat off the percarbonate stays quiet. That combination is what makes a low-percarbonate, enzyme-forward formula usable on darks at all. Products that depend on percarbonate need hot water to perform, and hot water plus oxidation is exactly what fades dye.
Optical brighteners. UV-reactive dye that makes fabric appear whiter without removing anything. It works until it degrades, and then the staining it was covering shows up. Whiteness here comes from percarbonate oxidizing the stain and enzymes clearing the deposits underneath, so it holds under any lighting rather than only the kind with UV in it.
Worth knowing that brighteners don't only affect whites. They deposit on everything in the load, including dark fabric, where that blue-white cast reads as a dull gray haze on black and navy. It's part of why darks start looking tired after enough washes. Nothing here is adding that.
Hard water. Carbonate precipitates the minerals, citrate holds them in solution. Most oxi-boosters are percarbonate and soda ash with nothing built in to manage hardness, which means their performance quietly degrades in the roughly 85% of American households that have some.
Dose. A scoop here is 10g against the much larger scoops most oxi-boosters ship with, and that isn't a smaller serving of the same thing. Two reasons. There's no filler in the formula, no sodium sulfate or bulking salts, where products in this category commonly run 30 to 50% inert by weight. And enzymes work catalytically, meaning they cut a bond, release, and move to the next one, so a small amount does a large amount of work over a wash cycle. An oxidizer is consumed as it works, so a product built on percarbonate needs mass to get results. Building around enzymes is what lets the dose come down.
Every Ingredient, Explained
Full list in formula order. Everything in here has a job.
Sodium Carbonate (Washing Soda)
Water Softener & Alkalinity Builder
Mostly here to get obstacles out of the way. Calcium and magnesium in hard water bind to surfactant molecules and take them out of play, and they occupy sites the enzymes need. Carbonate pulls those minerals out of solution first, so your detergent gets to use all the surfactants you paid for and the enzymes get clean access to the soil.
It also holds the pH steady. Soil is acidic and a wash drifts lower as it dissolves, so this is the reserve that keeps conditions stable through a full cycle rather than the first few minutes.
A mineral compound, Na₂CO₃, the same thing sold as washing soda in the laundry aisle.
Sodium Percarbonate (Oxygen Bleach)
Color-Safe Oxidative Bleaching
Releases hydrogen peroxide gradually across the wash cycle. The peroxide breaks down stain color at the molecular level, brightens whites, refreshes colors, and deodorizes.
Percarbonate is the oxidation system, handling the dimension of cleaning enzymes can't reach: the chromophore structures that make stains visible, and the volatile organics contributing to odor. It's a supporting mechanism here rather than the engine, which is what keeps the load low enough to use on darks.
Hydrogen peroxide breaks down into water and oxygen. Nothing is left behind, and unlike chlorine bleach it doesn't strip dye or weaken fiber on contact.
Sodium Citrate (Chelant and pH Buffer)
Hard Water Management
Works on hard water differently than the carbonate does. Rather than dropping minerals out of solution, citrate wraps around them and holds them there, binding calcium and magnesium into soluble complexes that rinse away cleanly.
Both approaches keep hardness from interfering, and both matter for the same reason: minerals that stay free will bind to your detergent's surfactants and take them out of play, and they'll occupy sites the enzymes need. Removing them means the cleaning power you added actually gets used.
Citrate's advantage is that nothing solid forms. That matters most where water sits still, since precipitate has hours to settle onto fabric during a soak, and citrate prevents anything from forming in the first place.
Sodium Zinc Polyitaconate (Zinc-Based Odor Neutralizer)
Chemical Odor Neutralization
A plant-based zinc compound that works on odor by holding onto it. The zinc binds to volatile odor molecules and the molecule can no longer evaporate, so it rinses out of the fabric instead of reaching you.
Nothing is being broken down or covered up. The compound is simply held and removed.
This is the third odor mechanism in the formula, and it catches what the other two don't. Enzymes remove the deposits producing odor and percarbonate oxidizes some of what's released, but oxidation is weak against the short-chain fatty acids behind sour, sweaty smells. Zinc binds those readily.
Derived from itaconic acid, produced through fermentation, biodegradable, and it leaves no residue on fabric.
7-Enzyme Blend
Targeted Soil Degradation
Protease, lipase, amylase, cellulase, mannanase, pectate lyase, and DNase. Seven classes, each targeting a different category of organic soil. Enzymes are biological catalysts produced through fermentation, breaking specific molecular bonds and continuing to work across the full wash cycle rather than getting consumed on contact.
Plenty of laundry products list "enzyme blend" without saying which enzymes or how many. Every class is named here, with what each one does in The Seven-Enzyme Panel above.
Sodium Silicate (Machine Protection)
Anti-Corrosion Agent
Forms a thin protective layer on metal and enamel surfaces inside the machine during the wash, preventing hard water minerals and cleaning agents from bonding to the interior and reducing scale buildup.
A small amount doing a specific job. It protects the machine rather than affecting your laundry.
What's Not in the Formula
Every ingredient below exists to make a product or a load of laundry appear to be something it isn't.
No Optical Brighteners
Optical brighteners are UV-reactive dyes. They absorb ultraviolet light and re-emit it as visible blue, which makes fabric look whiter under sunlight and fluorescent bulbs and nowhere else.
They don't remove stains. They coat over them. Your whites read bright under certain lighting while the discoloration sits underneath, and when the brightener degrades from time and UV exposure, everything it was hiding shows up. That's a real part of why whites washed in conventional detergent seem to yellow over time.
They also don't stay on the whites. Brighteners deposit on everything in the load, and on black or navy that blue-white cast reads as a dull gray haze. It's part of why darks start looking tired after enough washes.
Whitening here comes from percarbonate oxidizing the stain and enzymes clearing the deposits underneath. What you see is the real condition of the fabric, under any light.
No Fragrance
Fragrance in laundry products masks odor that wasn't eliminated. The source is still in the fabric, covered by a stronger smell, and when the fragrance fades the odor returns.
Three mechanisms handle odor here instead: enzymatic degradation of the deposits producing it, oxidation of the volatile compounds, and zinc neutralization of the molecules themselves. Remove the source and there's nothing left to cover.
No Chlorine Bleach
Percarbonate provides color-safe oxidation. Chlorine bleach is a far stronger indiscriminate oxidizer that strips dye, weakens fiber bonds, and damages elastic and spandex. The percarbonate here releases hydrogen peroxide gradually across the cycle without that intensity.
No Dyes
The blue and green speckles in some oxygen bleach products are cosmetic. They clean nothing. They exist because people associate color with activity.
No Fillers
No sodium sulfate, no sodium chloride, no inert bulking salts. Products in this category commonly run 30 to 50% filler by weight, which is a large scoop of mostly nothing.
This is why the dose here is 10g against the much larger scoops most oxi-boosters ship with. Everything in the formula has a job, and enzymes work catalytically rather than being consumed, so a small amount does a large amount of work over a cycle. A product built on oxidation needs mass to get results. Building around enzymes is what lets the dose come down.
No Undisclosed Ingredients
No proprietary blend, no "other ingredients." Every component is named on the label and explained in the ingredient section above.
7 enzyme classes. 3 cleaning systems. One scoop.Add the Enzyme Oxygen Booster to any detergent, any machine.
Shop the Booster
Frequently Asked Questions
Can I use this without detergent?
It's built to pair with your detergent rather than replace it. There are no surfactants in the formula, and surfactants are what lift and suspend loose surface soil. In the wash, run both: detergent takes the surface dirt, the booster takes embedded deposits, stains, and odor.
Soaking is where it works alone. The Deep Soak and Deep Whitening Soak are both booster-only, followed by a normal wash with detergent afterward. Enzymes, oxygen bleach, and zinc don't need surfactants to do their work during a soak.
Does it work in cold water?
The enzymes work at any temperature, though more slowly as it drops. Cold is fine for colors and darks, and turning on the pre-soak makes up the difference by giving them more contact time. What changes most with temperature is percarbonate activity, since warm and hot water drive the oxygen bleach harder for whitening and oxidative deodorizing.
Is it safe for colors and darks?
Yes. Warm water on a regular dark load is fine. The formula is enzyme-forward with a low percarbonate load, so there isn't much oxidizer in the scoop to begin with. For anything you're protective of, wash cold with the pre-soak on. The enzymes work at any temperature, so you're not giving up cleaning power to be careful.
No optical brighteners either, which matters for darks. Brighteners deposit on everything in the load and read as a dull gray haze on black and navy.
Does hard water affect how well it works?
Less than it affects most products. Sodium carbonate and sodium citrate both bind calcium and magnesium before they can interfere with your detergent's surfactants or the enzymes. Water up to about 180 ppm is covered on a standard scoop. Above that, add a second scoop.
Why doesn't it foam?
Foam comes from surfactants, and there are none in here. That's your detergent's job. Enzymes don't foam, percarbonate doesn't foam. No foam means different chemistry, not inactivity.
Why don't my whites look as bright under different lighting?
Switching from a detergent with optical brighteners changes how whites read under fluorescent light, because brighteners produce an artificial blue-white glow under UV. Without them you're seeing the fabric's actual color. As percarbonate oxidizes the accumulated stains and the enzymes clear organic deposits, real whiteness improves, and it looks the same under every light source rather than just the ones with UV in them.
Can I use it with chlorine bleach?
Not recommended. Chlorine bleach operates at a very different pH and oxidation potential than percarbonate, and the combination deactivates enzymes. Run chlorine separately if you need it for something specific.
Is it safe for HE machines?
Yes. Low-sudsing with no surfactants, and it dissolves fully in the water volumes HE machines use. All dosing here is calibrated for HE front-loaders. HE top-loaders take an extra half scoop per protocol, standard top-loaders take a full extra scoop. See the top-loader section for the reasoning.
How does it compare to other oxygen boosters?
Most are percarbonate-forward, meaning sodium percarbonate and sodium carbonate. Good oxidizer, effective at whitening and surface stains in hot water. The difference is scope. A percarbonate-only booster has no enzymes, so it bleaches stain color but leaves the deposit in the fiber. No zinc, so odor compounds aren't captured. No chelant, so hard water minerals are more likely to interfere. And no DNase, so the residue holding soil against the fabric stays put, which is a real part of why whites go gray.
The dose difference follows from that. A scoop here is 10g against the much larger scoops most oxi-boosters ship with, because enzymes work catalytically rather than being consumed, and there's no filler bulking it out.
Can I use it on cloth diapers?
Yes. The enzyme panel handles the protein and fat in baby waste, percarbonate provides oxidative cleaning, and the zinc neutralizes ammonia. Use a Heavy-Duty Reset with hot water for regular stripping, and a Deep Soak at warm temperature for anything set in. If your diaper manufacturer warns against enzyme cleaners, check whether the concern is specific to certain enzyme classes affecting waterproof coatings or just a blanket caution. The enzymes here don't affect PUL or TPU layers.
How many loads per bag?
At 1 scoop per standard load, a 2 lb bag (908g) runs about 90 loads. Heavier dosing for whites or deep soaks brings that number down.
Does it expire?
Full effectiveness for up to two years stored sealed in a cool, dry place. Moisture is the real enemy, since it activates the percarbonate early and degrades the enzymes. Keep it out of direct sun and away from heat. Enzyme activity may decline gradually after about a year, though percarbonate and zinc stay fully active. Clumping from moisture or heat exposure is normal for percarbonate powders and doesn't necessarily mean the product stopped working.
Can I soak outside the washing machine?
Yes. Bucket, basin, bathtub, utility sink, all fine. Use 1 scoop per gallon of warm water, submerge everything fully, and soak for the recommended time. A standard bucket is about 2 to 3 gallons. Stir once or twice to redistribute. Follow with a Heavy-Duty Reset wash.
Is it safe for septic systems?
Yes. The formula is biodegradable. Enzymes are proteins that break down naturally, percarbonate decomposes into water and oxygen, the zinc compound is biodegradable, and sodium citrate and sodium carbonate are mineral compounds common in septic-safe products.
Sources
The claims in this guide come from published research, government data, and manufacturer technical documentation. If you want to verify something or go deeper, start here.
DNase and Textile Odor
Yau, H.C.L. et al. "Removal of eDNA from fabrics using a novel laundry DNase revealed using high-resolution imaging."
Scientific Reports, 2021, 11, 21542
Peer-reviewed study published in a Nature journal. Demonstrates that microbial extracellular DNA accumulates on textiles through wear and laundering, forming part of an extracellular polymeric substance matrix that contributes to malodor and dinginess. DNase I reduced eDNA on T-shirts by 65% and on pillowcases by 34%. Confocal microscopy confirmed removal deep within fiber structures, not just on the surface.
Morales-Garcia, A.L. et al. "The application of a nuclease enzyme to clean stubborn soils and odors in laundry."
Journal of Surfactants and Detergents, 2020, 23, 797–807
Companion study demonstrating appearance and malodor benefits when adding DNase I to laundry detergent formulations for cleaning real consumer items.
Synthetic Fibers and Odor
Callewaert, C. et al. "Microbial Odor Profile of Polyester and Cotton Clothes after a Fitness Session."
Applied and Environmental Microbiology, 2014, 80(21), 6611–6619
Controlled study finding that polyester retained significantly more odor than cotton after identical exercise sessions. This is the research behind the claim that synthetic fibers trap odor differently than natural fibers.
Van Herreweghen, F. et al. "The Bacterial Life Cycle in Textiles is Governed by Fiber Hydrophobicity."
Applied and Environmental Microbiology, 2021
Confirms that polyester's higher hydrophobicity causes it to absorb more sebum than cotton, and that these deposits persist through conventional washing.
Enzyme Classes in Laundry
Olsen, H.S. and Falholt, P. "The role of enzymes in modern detergency."
Journal of Surfactants and Detergents, 1998
The foundational academic paper on detergent enzyme classes: proteases, lipases, amylases, and cellulases. Covers the specific mechanisms each class uses and their roles in both laundry and dishwashing applications.
Cellulase and Fabric Care
Lopes, A.M. et al. "Enzymatic modification of cotton fibre polysaccharides as an enabler of sustainable laundry detergents."
Scientific Reports, 2024, 14, 73128
Peer-reviewed study on how cellulase enzymes modify cotton fiber surfaces, trimming broken microfibrils that cause pilling, fuzziness, and loss of color vibrancy.
Hard Water
U.S. Geological Survey. Water Science School, "Hardness of Water."
Government source
National water hardness data, classification definitions, and the USGS national hardness map.
Water Quality Association. "Scale Deposits."
Industry body
Publishes the standard hardness classification scale (soft, moderate, hard, very hard) and treatment recommendations. The commonly cited figure that approximately 85% of American households have some degree of hard water is derived from USGS water monitoring data by the Water Quality Association.
Optical Brighteners
Wikipedia. "Optical brightener."
Reference
Overview of fluorescent whitening agents: how they absorb ultraviolet light (340–370 nm) and re-emit it as visible blue light (420–470 nm), their use in laundry detergents, and their degradation behavior over time.
Zinc Odor Neutralization
Itaconix Corporation. ONZ 105 Technical Data Sheet, V1.1, November 2025.
Manufacturer technical data
Technical data for Sodium Zinc Polyitaconate, the zinc-based odor neutralizer in this formula. Documents the compound's plant-based origin, biodegradability, and efficacy against body odor, urine (ammonia), sweat (isovaleric acid), foot odor (propanoic acid, methanethiol), and sulfur-based malodors.