Feomelanina is a type of pigment found in the hair, skin, and eyes of humans and other animals. It is responsible for lighter shades of color, such as blonde and red hair, and contributes to the overall hue of the skin. Feomelanina is produced in specialized cells called melanocytes, which convert the amino acid tyrosine into melanin. Unlike eumelanin, which produces darker pigments, feomelanina has a yellow to reddish color. The balance between feomelanina and eumelanin in an individual's body determines their overall pigmentation. This variation is influenced by genetic factors and can affect how individuals respond to sun exposure.