Question
Sat November 19, 2011 By:

Why does melanin production increase when exposed to UV rays?

Expert Reply
Sun November 20, 2011
Once ultraviolet rays penetrate the skin, they work directly on cells called melanocytes. Melanocytes are responsible for producing melanin, the substance in your body that give the skin its coloring. The ultraviolet rays work as a catalyst for the increased production of melanin
Home Work Help