Hair grows from follicles in the skin. It can cover most of our bodies exept the palms of our hands, soles of our feet, mucous membranes, and lips. Scientists are not able to determine gender by a strand of hair.

About Hair

Hair is a filamentous biomaterial, that grows from follicles found in the dermis. Hair is one of the defining characteristics of mammals. The human body, apart from areas of glabrous skin, is covered in follicles which produce thick terminal and fine vellus hair. Most common interest in hair is focused on hair growth, hair types and hair care, but hair is also an important biomaterial primarily composed of protein, notably keratin. In many human societies, women predominantly grow the hair on their head long while men cut theirs short. The word ''hair'' often refers to two distinct structures: Hair fibers have a structure consisting of several layers. Starting from the outside: Each strand of hair is made up of the medulla, cortex, and cuticle. The innermost region, the medulla, is not...'

Contributions by Solipsist, Calair, and Patrick.

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