Sweat contains Water and

Answer: Sweat glands, sometimes referred to as sudoriferous or sudoriparous glands, are tiny tubular structures of the skin that produce sweat.

Sweat is mostly composed of water, but it also includes salts. The body sweats in order to chill itself. When the body’s temperature rises, it produces perspiration to cool itself.

It also contains lactic acid, urea, glucose, etc. It also contains trace levels of sodium chloride, a salt.