Borax (Natural)
Borax (Natural)
A time-tested cleaner for softening water and controlling odours
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A mineral cleaner for laundry, deodorising, and general household cleaning.
Borax is a naturally occurring mineral salt used to soften water, support stain removal, and control odours without fragrances, fillers, or synthetic additives.
- Softens water for more effective cleaning
- Helps lift dirt and stains in laundry
- Neutralises odours at the source
- Supports grease and grime removal
- Works across laundry, kitchen and bathroom
Plastic-free • Refillable • No fillers or fragrances
Why you’ll use this
Why you’ll use this
Borax works by adjusting water chemistry, making it easier for soaps and cleaning agents to do their job. It helps lift dirt, control odours, and support overall cleaning performance without needing multiple products.
It’s a versatile, everyday ingredient used in laundry, soaking solutions, and general cleaning where you want effective results without added fragrance or complexity.
This ingredient is for you if you have:
- Hard water affecting cleaning performance
- Ongoing odours in laundry, fabrics, or bins
- Too many products doing similar jobs
- A preference for simple, low-tox cleaning
What makes it useful
- Supports cleaning performance by softening water
- Helps lift dirt and stains
- Neutralises odours instead of masking them
- Multi-purpose across laundry and household cleaning
- Septic-safe and biodegradable
- Breaks down naturally after use
- Concentrated and cost-effective
Ways people use it
- Laundry powders and boosters
- Soaking clothes, towels, and cloths
- Deodorising bins, drains, and fabrics
- General household cleaning
- Supporting stain removal
Learn more about borax
🔗 Ingredient library
See what you can make with it
🔗 DIY Recipes
Good to know
Good to know
Borax is effective and widely used, but like any active cleaning ingredient, it should be handled with care.
- Not suitable for use on delicate fabrics
- Always test first on coloured fabrics and surfaces
- Wear gloves for extended use
- Store in a cool, dry place away from moisture
- 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 15% 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.
Borax is a powerhouse product great at removing stains. I use in my toilet, bathroom, kitchen and wash to help lift grime easily
Great
Great size for so many cleaning solutions
Love the eco friendly packaging
great product
I’ve bought several products from Under Your Sink since I’ve decided to do as much of our cleaning greener. I’m impressed by the packaging (brown paper bags), I’m close by so I can pick up, and I’d never go back to non-green cleaners, not even eco cleaners. I’ve used them for cleaning the bathroom, including shower screen and loo, in the laundry for normal washing and oxygen bleaching, and I’m about to make dishwasher tablets. We have a worm-farm black water system so using worm friendly products is important.
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.