Pure Percarbonate (Oxybleach)
Pure Percarbonate (Oxybleach)
One ingredient, multiple jobs!
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Natural alternative to chlorine bleach - without the harsh residues.
An oxygen-based cleaner that lifts stains, brightens whites, and breaks down everyday grime. Best used in hot water soaks for stains and deep cleaning.
- Lifts stains and restores whites
- Breaks down grease, food, and organic build-up
- Deodorises at the source (not just covering smells)
- Works across laundry, kitchen, and bathroom
Plastic-free • Refillable • No fillers or fragrances
Why you’ll use this
Why you’ll use this
Sodium percarbonate releases oxygen when mixed with warm to hot water. This oxygen action lifts stains, loosens built-up grime, and refreshes fabrics and surfaces - without harsh fumes or residues.
It’s a staple in DIY laundry powders, soaking solutions, and heavier cleaning jobs where you need extra support.
This ingredient is for you if you have:
- An overcrowded cupboard full of single-use cleaners
- Concerns about harsh chemicals, fumes, or residue
- The need for a heavy-duty cleaner that still fits a low-tox approach
What makes it useful
- Oxygen-based cleaning without chlorine
- Effective on tough stains, grease, and organic build-up
- Safe for whites and colours
- Septic-safe and biodegradable
- Breaks down naturally after use
- Replaces multiple specialised cleaners
- Concentrated and cost-effective
- Easy to measure, store, and reuse
Ways people use it
- Laundry soaks for stains, odours, and whitening
- DIY laundry powders and boosters
- Degreasing tea towels, cloths, and mop heads
- Cleaning bins, sinks, and drains
- Soaking pots, pans, and utensils
Learn more about sodium percarbonate
🔗 Ingredient library
See what you can make with it
🔗 DIY Recipes
Good to know
Good to know
Sodium percarbonate is effective and easy to use, but like any active cleaning ingredient, it works best when used with a little care.
- Works best in hot water above 40 °C
- Not suitable for wool, silk or delicate fabrics
- Always test first on coloured fabrics and surfaces
- Store in a cool, dry place away from moisture
- Gloves recommended for extended contact
- Keep out of reach of children and pets. Harmful if ingested
Packaging details
Packaging details
Apothecary Jar
A wide-mouth jar made from glass with a tinted amber finish. The lid holds roughly a tablespoon, making it handy for measuring. Airtight, practical, and bench friendly.
Eco-Friendly Earth Bags
Made from brown recycled paper and a 100% natural corn-based biofilm, are both renewable and compostable. For optimal disposal, we recommend commercial composting after removing any tin ties and labels. Under the right conditions, these bags can decompose in about six months. Due to their compostable nature, Earth Bags are best for short-term ingredient storage. For long-term storage, transfer your ingredients to an airtight container.

Enjoy 10% Off
When you bundle any 4 ingredients. Discount will be applied at checkout.
Clean on Your Terms
You choose the ingredients, giving you full control over what comes into your home.
One Ingredient. Endless Uses.
No single-use products. Each ingredient works solo or together across many tasks.
Full Green Approach
Biodegradable & eco-friendly. Responsibly sourced with plastic-free packaging.
Sodium Percarbonate is a wonderful asset to have in the laundry. It not only brightens colours, but gets out those stubborn stains on clothing. All one has to do is dissolve a tablespoon of SP in 5 litres of hot water, place items in the mix (ensure that they are covered, then leave it to soak overnight. Then wash as usual the next day. Stains gone and colours brighter.
The added bonus is that if you are not on town water, Sodium Percarbonate is safe to use in a septic system. Very simple, no stress.
I have been using Percarbonate for some time now and love that I can purchase it easily from Under Your Sink. It removes stains safely and without any harmful chemicals. It can be used pre-wash as a soaker or can be added to the wash in the machine.
Arrived within a few days or ordering
Quick postage and lovely service. Thankyou!
Love the potential of this product! My bathroom says thank you and I have even used it to rejunvinate the above ground pool for the upcoming summer!
My neighbour was cleaning the pool with H*ndy *ndy and was totally impressed when I bought out this product in some boiled water!
Get Emails Worth Opening
To start, you’ll receive my quick-start guide to DIY green cleaning, plus a welcome discount for your first order.