Antiperspirants use powerful astringents such as aluminum salts to block, close or clog pores so that they cannot release sweat. Deodorants use antiseptic action against bacteria to neutralize the smell of sweat.
Antiperspirants control both body odor and sweat. They prevent sweat from reaching the surface of the skin and use antimicrobial ingredients to eliminate body odor-causing bacteria. Deodorants only contain antimicrobial agents, which are responsible for preventing body odor, and they do not control the flow of sweat. Fragrances are often contained in both deodorants and antiperspirants to help mask body odor. Aluminum crystals discovered in tombs of Pharaohs indicate the use of natural antiperspirants in Ancient Egypt.