How does Hair grow?

Hair grows out of tiny openings (or follicles) in the skin. Each hair is a series of scaly cells piled one on top of the other...

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Hair grows out of tiny openings (or follicles) in the skin. Each hair is a series of scaly cells piled one on top of the other. These hair scales are made out of a tough substance called keratin. At the base of each hair is a bulb-shaped root. This root receives nourishment from the body and produces keratin. As new hair cells form, they push the old scales up through the follicles, causing the hair to grow and lengthen. Hair color is due to a coloring matter known as pigment. This pigment becomes part of the hair cells as they form in the roots.

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