Narrated by Penn State University anthropologist Dr. Nina Jablonski, this engaging animation shows how human skin cells produce the pigment melanin, which gives skin its color. Melanin is produced inside cells called melanocytes that reside in the skin’s top layer, the epidermis. From the melanocytes, melanin is delivered to keratinocytes, the most abundant cell type in the epidermis. The melanin in the keratinocytes forms a protective shield from the sun’s ultraviolet radiation. The type of melanin that is produced, how much of it is produced, and how it is distributed in skin cells, all determine a person’s unique skin color.