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Answers From Experts & Organizations (1)

Dermatology
American Academy of Dermatology
91 Answers
778 Helpful Votes
19 Followers
A.
Gray hair results from the loss of functional melanocytes in the bulb of the hair. These are the pigment-producing cells, which transfer pigment granules to the actively growing anagen hairs. It can occur gradually as we age, or sooner in life for some genetically predisposed individuals.

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