Made of a layers of protein called keratin, also found in your skin and hair. Keratin is also used to create hair and the top layer of you skin.
What are two Function of hair? Protection, and regulation of the body temperature and facilitation protect the skin from external damage such as sun wind foreign particles.
function of sweat and sebaceous gland?
Sweat gland- positioned deep inside the skin, and their primarily function is temperature regulation.
Sebaceous gland- producing and releasing sebum in order to help protect and lubricate the surface of the skin,