Aluminium Chloride is the first antiperspirant salt to be used for commercial antiperspirant products. It is currently the strongest and most effective active ingredient used to control excess sweating.

It also kills the bacteria in perspiration, which helps to eliminate body odor. For some individuals, aluminum chloride can be irritating to sensitive skin. Severe allergic reactions are very rare. It has been approved by the FDA in concentrations up to 15%.