If my experience in other West African countries is any guide, the answer is “vastly, vastly differently”.

I use a deodorant crystal as well. The chemical is potassium aluminum sulfate - KAl(SO₄)₂. I prefer it because the crystal lasts practically forever, thus saving the money and hassle of monthly resupplies at the drug store. As a bonus, its astringent and antiseptic properties are useful on shaving nicks. It has…