But even if these claims are eventually debunked, there could be a good reason to make the switch if you’ve got sensitive skin.
Dr Alexis Granite, consultant dermatologist at London’s Cadogan Clinic, told The Huffington Post UK aluminium salts can easily irritate armpits - causing dermatitis or folliculitis - and recommends trying a more ‘natural’ alternative if you’ve got sensitive or eczema-prone skin.
Aluminium salts work by temporarily blocking the sweat glands (hence the term anti-perspirant), so making the switch can take a bit of getting used to - ’Get The Glow’ author Madeline Shaw told HuffPost there’s always a tricky “transitional period” at first.
Luckily, sweating doesn’t have to mean bad-smelling armpits - find the right bacteria-reducing ingredients and it’s like nothing ever happened under there. Read on below for our top 5 picks:
Praised by everyone from top beauty editors, to Madeline Shaw, Salt Of The Earth's spray deodorants work and work well.
This one includes a fusion of over 15 natural botanical extracts and oils, and smells far better than any chemical concoction.
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Best For... Post-Shower
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Pitrok
Pitrok Crystal Natural Deodorant Stick, £6.59 from boots.com
The most 'natural' deodorant you can get - made entirely from mineral salts that stop bacteria reproducing.
There's just one downside - the crystal needs to be wet, or applied to wet underarms, making it slightly tricky to use on the go, but the perfect addition to your bathroom cabinet.