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So presumably if it contained isopropyl alcohol it could also be called alcohol free by these standards. Not exactly honest in my opinion. This is as bad as so called fat free food products that...

The lable may claim to be alcohol free, but the list of ingredients includes glycerine, which is an alcohol. It also includes tocopheryl, most likely tocopheryl acetate which will hydrolize to...

I'm not sure how aluminum would dry your skin. Alum, however might since it is somewhat hydrophilic. Sodium chloride is table salt; it is very hydrophilic so it almost certainly will dry your skin....

Yes, Ammonium, Methyl ammonium and hydroxylammonium can all act as the monovalent cation. So can hydrazinium. The trivalent cation will still most likely be aluminum.

Alum, the specific compound, is potasium aluminum sulfate (aka potasium alum). The term alum is also used for a clase of compounds: bisulfates containing both a monovalent metalic cation (potasium...