Hair care and dyeing

Zoe Diana Draelos1

  • 1Department of Dermatology, Duke University School of Medicine, Durham, N.C., USA.

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Hair and hair follicles are integral components of the integumentary system. Hair is a filamentous structure composed mainly of a protein called keratin. It is found on the surface of the skin throughout the body, except for areas such as the palms of the hands and soles of the feet.
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