How does the potassium alum used in Green People deodorants differ from aluminium salts? image
  • Clean beauty

How does the potassium alum used in Green People deodorants differ from aluminium salts?

There are two main differences between Potassium Alum (Aluminium potassium sulfate dodecahydrate) and the salts Aluminium Chloride and Aluminium Chlorohydrate which are commonly used in antiperspirants.

By Charlotte Vøhtz

1 Minute read

 Molecular size is the main difference between Potassium alum (Aluminium potassium sulfate dodecahydrate) and the salts Aluminium chloride and Aluminium chlorohydrate which are commonly used in antiperspirants.

Potassium Alum vs Aluminium chloride / chlorohydrate

Aluminium chloride and Aluminium chlorohydrate have a small molecular size and work as antiperspirants by entering sweat ducts and reacting with amino acids and peptides to form a gel. This gel then plugs the sweat duct and prevents sweating. 

The aluminium in Potassium alum that we use is bonded into a much larger molecule – one that is physically too large to be absorbed through the skin.

Instead of forming a gel, thereby preventing perspiration, Potassium Alum sits on the surface of the skin where it prevents the bacteria responsible for causing sweaty odours from multiplying.

Potassium Alum deodorants by Green People

Safe and gentle on your skin, Green People's natural and organic deodorants keep you feeling fresh without the use of pore-clogging aluminium salts.

See all natural deodorants now

Read next...

A collagen-boosting routine for ageing skin
Anti ageing

A collagen-boosting routine for ageing skin

Looking for a collagen-boosting routine for ageing skin? Find out how to naturally boost your skin’s collagen with our 4-step routine.

By Lucy Thorpe

09/03/2026

11 Minute read

READ NOW
French White Lupin
Anti ageing

Meet CO₂LLAGANEER® Bio: for naturally firmer-looking skin

As skin naturally loses firmness with age, supporting collagen becomes an important part of your routine. Discover how CO₂LLAGANEER® Bio, an organic White Lupin Seed Extract, can help to improve skin firmness and support smoother, stronger-looking skin.

By Lucy Thorpe

09/03/2026

9 Minute read

READ NOW
sunscreen being applied to a toddlers arm
Baby & Child

What's a safe sunscreen option for toddlers?

With so many sunscreens to choose from, it’s hard to know what’s best for your toddler. We're here to help you choose sun protection that keeps toddlers' skin comfortable and cared for.

By Alexandra Julian

24/02/2026

10 Minute read

READ NOW
Read more articles

1,500+ Five star reviews

Read all Reviews
"One of the best companies I have ever dealt with in my 63 years on this planet!"

Jan B.

Verified Buyer

"Have fallen in love with this product range. They are lovely to use and they work!"

Carole G.

Verified Buyer

"You guys are amazing, continue to love the brand, excited to order from you again!"

Maitreya L.

Verified Buyer

"Super quick delivery, ethical packaging and beautiful products."

Nat J.

Verified Buyer

"I love every product I have tried from Green People, and the customer service has always been excellent."

Maria H.

Verified Buyer

"So glad I have found an ethical supplier with great products!"

Susan B.

Verified Buyer