May 28, 2022

The hairs are epidermal protrusions formed from the cornea that grow on the outer surface of the skin of mammals. The coat of an animal, consisting of individual hairs, is often called the coat. The hair has many functions: for example, it protects the animal from excessive or low temperatures. Often the hair is the color of the animal's habitat, providing the prey animal with protection from its predators or allowing the predator to lurk in its prey unnoticed. For example, the color of the coat of a rabbit varies with the seasons. Plants also have hair, but they are not the same substance. The hair is made up of about 10% water and about 90% biological polymer: a protein called keratin. Elsewhere, hair grows, but not usually as densely. Human hair growth increases during adolescence and adolescence, especially in boys.

See also

Hair removal