A potassium alum stone
Instead of branded natural deodorant, restocked every few weeks
~$9 for roughly a year against ~$15 a stick
One mineral, no perfume, and the same effect on the bacteria that cause the smell.
Sweat has no smell of its own. The smell comes from bacteria working on it, and a film of alum leaves the skin a poor place for them to do that. The formal evidence is thin and the chemistry is plain. One stone lasts about a year, which is where the money goes.
Alum is an aluminium salt, so aluminium-free was never the claim here whatever the shelf implied. It is also not an antiperspirant. Nothing in it plugs a duct, and you will sweat exactly as much as before.
What to get
- Deodorant stonePotassium alum mineral stone, fragrance-freeAmazon ~$9
- Mineral deodorant travel stickThe same alum in a glide stickAmazon ~$7
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