Brown hair - wikipedia, the free encyclopedia, Brown hair is the second most common human hair color, after black hair. it varies from light brown to almost black hair. it is characterized by higher levels of the. Human hair color - wikipedia, the free encyclopedia, Hair color is the pigmentation of hair follicles due to two types of melanin: eumelanin and pheomelanin. generally, if more eumelanin is present, the color of the. Hair - definition of hair by the free dictionary, Hair (hâr) n. 1. a. any of the cylindrical, keratinized, often pigmented filaments characteristically growing from the epidermis of a mammal. b..