Sweat Gland -

: Primarily localized in areas with hair, such as the armpits and groin . They produce a thicker, milky fluid containing proteins and lipids that only begins to secrete at puberty . While the sweat itself is odorless, it creates body odor when broken down by bacteria on the skin.

: These are the most common and are found all over the body, with high densities on the soles of the feet, palms, and forehead . They release a clear, watery, and odorless fluid directly onto the skin's surface.

There are two primary classifications of sweat glands, each with distinct locations and roles: