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Answers From Experts & Organizations (1)

American Academy of Dermatology
91 Answers
1,087 Helpful Votes
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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