When skin cells responsible for pigmentation are exposed to estrogen or progesterone, the cells respond by adjusting their melanin production, resulting in either skin darkening or lightening.

A tan is as much a part of the unofficial Southwestern uniform as a sturdy pair of flip-flops and dark sunglasses. Beyond its substantial cosmetic appeal, a tan is the body's natural defense against ...

Melanin is a substance present in the skin that produces pigment. Each person has a different amount of melanin in their skin. The variation of melanin is due to genetics and other factors. In this ...

Melanin is a natural pigment found in most living organisms — it colours the eyes, hair, and the skin — and even in squid ink. This natural pigment is produced by specialised cells called melanocytes, ...