INCI
Potassium Alum
Potassium Alum
A naturally occurring mineral salt commonly used in crystal deodorants. It forms a light, invisible layer on the skin surface that may help reduce the growth of odour-causing bacteria.

This version of our Salt of the Earth Classic Crystal Deodorant comes in a cardboard box, offering a lower-plastic alternative to conventional packaging. Ideal for those looking to reduce single-use plastic, this natural crystal deodorant is conveniently shaped for easy handling—simply remove it from the box and apply. Just be sure to thoroughly dry the crystal before returning it to the box!
Our crystal deodorants help to inhibit the growth of odour-causing bacteria by forming an invisible layer of mineral salt on the skin.
£5.19
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Plastic Free Deodorant Crystal 75g has received 3 awards

Rude Health Awards, Best Body / Beauty Product 2020


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Rude Health Awards, Best Body / Beauty Product 2020


A closer look at standout ingredients in this formula
INCI
Potassium Alum
A naturally occurring mineral salt commonly used in crystal deodorants. It forms a light, invisible layer on the skin surface that may help reduce the growth of odour-causing bacteria.
COSMOS certified ingredients from natural sources
Tap any ingredient to learn more
Real feedback from 77 verified customers
77 reviews
91% recommend this product
My friend recommended this deodorant and I was sceptical at first. I have been used natural deodorant for years and have always been disappointed by the marks it left on clothes or how ineffective it was. This deodorant is the best thing I have ever used. I’ve been using for around a month and I am still shocked it works! Would recommend to anyone!!
— Molly
Molly
3 Mar 2026
My friend recommended this deodorant and I was sceptical at first. I have been used natural deodorant for years and have always been disappointed by the marks it left on clothes or how ineffective it ...
Thomas Mayne
10 Aug 2025
The natural crystal mineral deodorant is really simple to use, just wipe on after your wash whilst your skin is still damp and you'll have odour free pits for the rest of the day. No marks on your cl...
Jane Johnson
28 May 2025
Your crystal deodorants last so very long. I have just replaced my travel version in a plastic case - essential for traveling light - after 2 years. And I suspect my normal crystal deodorant lasts ove...
Susan
6 Dec 2025
I can't get enough of this product. It's absolutely brilliant. I was initially gifted it by a friend and haven't looked back since. I love the fact that my pits are odour free and I'm not clogging the...
S
15 Dec 2024
Best deodorant ever. Dry & fresh underarms for 24 hours at least. I use it to prevent swamp boob in hot weather. No plastic packing on this one, no nasties, biodegradable. Card packaging fully rec...
Amanda Jelley
16 Jul 2024
This is the second natural Crystal deodorant (the first one lasted years) I have bought from your company. It is fantastic it keeps you fresh all day with no underarm odour even when doing hard physic...
Swipe to browse reviews
Molly
3 Mar 2026
My friend recommended this deodorant and I was sceptical at first. I have been used natural deodorant for years and have always been disappointed by the marks it left on clothes or how ineffective it ...
Thomas Mayne
10 Aug 2025
The natural crystal mineral deodorant is really simple to use, just wipe on after your wash whilst your skin is still damp and you'll have odour free pits for the rest of the day. No marks on your cl...
Jane Johnson
28 May 2025
Your crystal deodorants last so very long. I have just replaced my travel version in a plastic case - essential for traveling light - after 2 years. And I suspect my normal crystal deodorant lasts ove...
Susan
6 Dec 2025
I can't get enough of this product. It's absolutely brilliant. I was initially gifted it by a friend and haven't looked back since. I love the fact that my pits are odour free and I'm not clogging the...
S
15 Dec 2024
Best deodorant ever. Dry & fresh underarms for 24 hours at least. I use it to prevent swamp boob in hot weather. No plastic packing on this one, no nasties, biodegradable. Card packaging fully rec...
Amanda Jelley
16 Jul 2024
This is the second natural Crystal deodorant (the first one lasted years) I have bought from your company. It is fantastic it keeps you fresh all day with no underarm odour even when doing hard physic...