Melanocytes are cells located in the bottom layer (the stratum basale) of the skin's epidermis, the middle layer of the eye (the uvea), the inner ear, meninges, bones and heart that produce melanin which's a pigment. Melanogenesis Through a process called melanogenesis, these cells produce melanin, which's a pigment found in the skin, eyes, and hair. This melanogenesis leads to a long lasting tan which's in contrast to the tan that originates from oxidation of already existing melanin. There're… (More on Melanocyte)