Lucia said: > thanks for your reply Carol. I have used Nature's Gate deodorant crystal > which claims ingredients: "mineral salts, potassum sulfate, contains NO > aluminum chlorohydrate". so you're saying that it may contain "alum" and > there's controversy over this? I'd bet good money that it does contain alum. It's understandable that the Nature's Gate folks don't want to list any ingredients that look anything like "aluminum", so I'm guessing that they say "mineral salts", a term which can be used to describe alum, to avoid the whole alum issue. There is controversy over 1) whether alum acts like aluminum when used in these products and 2) whether aluminum is harmful in the first place. I'm going to try the apple cider vinegar. If it works as well as I hear.. who needs aluminum? Carol