What Is Oxi? The Science of Oxygen-Powered Cleaning

Oxi is shorthand for oxygen-based cleaning, and the science behind it is genuinely satisfying. Most "oxi" products are built on sodium percarbonate, a mineral-based powder that does something clever the moment it touches water: it breaks apart into hydrogen peroxide and washing soda. The peroxide releases oxygen, the oxygen goes after the colored part of stains, and the stain stops being visible.

That's the whole trick. No chlorine, no drama, just a mineral powder that turns into an active cleaner the second it gets wet.

Let's unpack how it actually works, because this is the rare bit of household chemistry that's fun to know.

What Sodium Percarbonate Actually Is

Sodium percarbonate sounds intimidating and is refreshingly simple. It's a dry, stable combination of washing soda and hydrogen peroxide, held together in powder form.

Dry, it just sits there, which is why it ships happily in a paper carton and keeps well on a shelf. Add warm water and it separates into its two parts. The hydrogen peroxide starts releasing oxygen. The washing soda raises the water's alkalinity, which helps loosen soils.

In CocoClean's Oxi Booster, sodium percarbonate is the headline act, described on the spec exactly as it behaves: a mineral-based oxygen stain removal agent that releases oxygen to help lift stains and brighten whites.

How Oxygen Removes a Stain

Here's where the chemistry gets genuinely elegant.

Most stains are visible because of chromophores, the parts of a molecule that absorb light and reflect color back at your eye. Coffee, wine, grass, tea, and berry stains all get their color this way.

Oxygen released from the peroxide attacks those chromophore bonds. Break the bond, and the molecule stops reflecting color. The stain isn't scrubbed out of the fabric so much as switched off, which is why oxygen cleaning often works on stains that resist physical scrubbing.

This is also why oxygen bleach behaves differently from chlorine bleach. Chlorine is aggressive and indiscriminate, stripping color broadly. Oxygen works on the chromophores and then breaks down into water and soda ash, which is why oxygen cleaners are generally considered gentler on colors and why they're widely used on colored fabrics where chlorine would be a disaster.

Why Temperature Matters So Much

Oxygen release is temperature-sensitive, and this is the single most useful thing to know about using any oxi product well.

In hot water, sodium percarbonate releases oxygen readily, which is why the carton directions specify warm or hot water for both the presoak and the all-purpose mix. In cold water, the reaction slows considerably, and the oxygen release can be sluggish enough that you don't get much benefit.

Which brings us to a genuinely neat piece of chemistry: TAED.

The TAED Trick

TAED, tetraacetylethylenediamine, is a bleach activator, and it solves the cold-water problem in an interesting way.

Rather than making oxygen release faster at lower temperatures, TAED reacts with the peroxide to form peracetic acid, a compound that's active at much lower temperatures than peroxide alone. The result is that an oxygen system with TAED keeps working in cooler water, where plain sodium percarbonate would be dozing.

This is why TAED appears in both CocoClean products. In the laundry powder, it keeps the oxygen bleach effective in cold cycles, which matters because most modern washing runs cold. In Oxi Booster, it's listed as a processing aid supporting the same oxygen system.

Small ingredient, genuinely clever job.

Why the Solution Has a Four-Hour Window

The carton says to use an all-purpose mix within four hours, and now the reason should make sense.

Once sodium percarbonate dissolves, it starts releasing oxygen immediately. That release is the cleaning action. Over the following hours, the solution gradually spends itself, and what's left is progressively less active water.

So the four-hour window isn't a safety rule, it's a potency rule. Mix what you'll use, use it while it's lively, and mix fresh next time. This is also why a batch that's been sitting overnight underperforms: the oxygen has largely left the party.

The Supporting Cast in Oxi Booster

Oxygen does the headline work, but a good oxi formula gives it help.

Sodium carbonate and sodium borate are mineral-based agents that soften water and boost overall cleaning performance, which matters especially in hard water where minerals otherwise interfere. Sodium coco sulfate, alkyl glucoside, and potassium cocoate are plant-based stain removal agents that lift and lift oils and soils so the oxygen can get at the colored compounds. Sodium citrate and glycerin serve as processing aids, and TAED handles the cold-water activation.

That's the entire list, and every item on it has a stated job. No synthetic dyes or perfumes, no parabens, phosphates, PVA, phthalates, or optical brighteners. Biodegradable, ultra concentrated, in a recyclable paper carton.

Using Oxygen Cleaning Well

The science points to a few practical habits.

Warm or hot water gets the best oxygen release, so use it where you can. For an all-purpose mix, that's half to one tablespoon per 16 ounces or four-plus tablespoons per gallon. For laundry, it's two to three tablespoons in the drum, or the same in hot water as a presoak before adding towels, sheets, or clothes.

Give it time. Oxygen cleaning is a chemical process rather than a mechanical one, so soaking usually beats scrubbing, and the minutes you let it sit are doing the actual work.

Skip silk, wool, and leather. Test unfamiliar surfaces in a hidden spot. Store the powder somewhere cool and dry, since it's designed to stay inert until it meets water, and an airtight container helps in humid climates.

Frequently Asked Questions About Oxygen Cleaning

What is oxi in cleaning products?

Oxi refers to oxygen-based cleaning, usually powered by sodium percarbonate. When it dissolves in water it releases oxygen, which breaks apart the color-carrying bonds in stains so they're no longer visible.

Is oxygen bleach the same as chlorine bleach?

No. Chlorine bleach strips color broadly and aggressively. Oxygen bleach targets the chromophores in stains and then breaks down into water and soda ash, which is why it's commonly used on colored fabrics where chlorine wouldn't be suitable.

Does oxi cleaner work in cold water?

Plain sodium percarbonate works slowly in cold water because oxygen release is temperature-dependent. Formulas containing TAED, a bleach activator, stay effective at lower temperatures. CocoClean includes TAED for exactly this reason. If you have bad stains try using warm water cycle and the TAED kicks in.

What is sodium percarbonate?

It's a dry, stable compound of washing soda and hydrogen peroxide. In water it separates, releasing oxygen for stain removal while the soda component raises alkalinity to help loosen soils. It's the active ingredient in most oxi products.

Why should I mix oxi solution fresh each time?

Because oxygen release begins as soon as the powder dissolves and tapers off over the following hours. Using the solution within four hours means cleaning with it at full strength rather than with water that has already spent its oxygen.

Does oxygen cleaning disinfect?

Oxygen cleaners are cleaners and stain removers. Removing a mold or mildew stain from a surface is a cleaning function, which is distinct from disinfecting. Oxi Booster is not a registered disinfectant.

The Bottom Line

Oxi is oxygen doing chemistry on your behalf. Sodium percarbonate meets water, releases oxygen, and that oxygen breaks the bonds that make stains visible. Warm water speeds it up, TAED keeps it working when the water's cool, and a fresh mix beats an old one every time.

It's a genuinely elegant bit of science for something that lives in a paper box under your sink. CocoClean's Oxi Booster puts it to work as a Universal Super Cleaner, made with coconut, oxygen, and minerals, ultra concentrated and free of synthetic dyes, perfumes, parabens, phosphates, PVA, phthalates, and optical brighteners.

Coconut, oxygen, and minerals. Cleans like a dream.