Pheomelanin is a type of pigment found in the hair, skin, and eyes of humans and other animals. It is responsible for red and yellow hues, contributing to the coloration of red hair, freckles, and light skin tones. Pheomelanin is produced in specialized cells called melanocytes, which convert the amino acid tyrosine into pigments. Unlike eumelanin, which provides darker shades like brown and black, pheomelanin has a lighter appearance. The balance between pheomelanin and eumelanin in an individual's body determines their overall pigmentation. This pigment plays a role in protecting the skin from ultraviolet (UV) radiation, although it is less effective than eumelanin.