How Do Hair Transplants Work? | Earth Science

Have you ever wondered how hair transplants actually work? Where does the hair come from?
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Hair can grow from nearly every parts of the human body. Hairs grow out of hair follicles and they can be as densely packed as 100 follicles per cm². But for men in particular, hair follicles can stop growing on the head. Greg Foot explains how hair transplanting works by relocating active hair follicles from other areas of the body and how the process has evolved since it's beginnings back in the 1950s.

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