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    hair and colour

    why does hair grow, and where does the colour come from.

    0  Views: 938 Answers: 1 Posted: 8 years ago
    Tags: hair

    1 Answer

    Hair is a protein made of a follicle, root and bulb. The follicle is deep in the skin & is attached to a tiny sebaceous gland and muscle fiber. Hair grows when the follicle gathers a "bundles" old cells. The sebaceous gland and muscle fiber push the bundles of old cells up through the skin in a root sheath. The sheath has an internal and external layer. The external layer contains RNA that gives the hair its color and texture. The internal layer contains the hair fiber.



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