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    Glossary Hair Anatomy

    structure and components of a hair strand and follicle

    Hair anatomy refers to the structure and components of a hair strand and its follicle. Each hair consists of the hair shaft, which is the visible part above the skin, and the hair root, which is embedded in the follicle beneath the skin. The hair shaft is made up of three layers: the cuticle (outer layer), the cortex (middle layer), and the medulla (inner layer). The follicle includes the bulb, where cells divide and grow to form the hair, and is surrounded by sebaceous glands that produce oil to condition the hair and skin.

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      learn Hair Fibers

      cosmetic product that temporarily makes hair appear thicker

      learn Hair Transplant

      Hair transplantation moves DHT-resistant follicles from a donor area (back and sides of the scalp) into thinning or bald areas. The transplanted hair is generally permanent, though surrounding native hair can keep thinning.

      learn Adenosine

      nucleoside used for hair regrowth stimulant properties
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