But even if these claims are eventually debunked, there could be a good reason to make the switch if you’ve got sensitive skin.
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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.
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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
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.