deodorant

A deodorant is a substance applied to the body to prevent or mask body odor caused by bacterial breakdown of perspiration, such as that in the armpits, groin, or feet. A subclass of deodorants called antiperspirants prevents sweating itself, typically by blocking sweat glands. Antiperspirants are used on a wider range of body parts at any place where sweat would be inconvenient or unsafe. Other types of deodorant allow sweating but prevent bacterial action on sweat.