What is perspiration ?

Perspiration is the evacuation of sweat, which is secreted by the sweat glands. 

Located in the dermis of the skin, there are 2 types of sweat glands. The eccrines produce sweat rich in water and mineral salts. They are particularly abundant on the hands, feet and forehead and are essential for regulating the body temperature, at 37°. When it is hot, the body releases heat through the skin. The apocrine glands are less in number and are located in the hairy areas. These glands begin to function during puberty. The smell of perspiration is caused by the presence of bacteria on the surface of the skin that come into contact with sweat.