Why Are Some Hair Follicles Black?

Melanin, produced by melanocytes, is responsible for the pigmentation of hair, eyes and skin. The pigmentation seen in the hair follicle is determined by genetic makeup and the interactions between the production of melanin, transfer of the molecules and formation of the hair shafts, notes NCBI. During this time the hair follicles are actively pigmented and the density of the melanin deposits result in varying colors.