Final answer:
The brown color of hair is provided by eumelanin, one of the two types of melanin responsible for hair pigmentation. The other type, pheomelanin, contributes red and yellow colors.
Step-by-step explanation:
The melanin that provides brown color to the hair is eumelanin. Hair color is mainly determined by the two types of melanin: eumelanin and pheomelanin. Eumelanin is responsible for shades of brown and black hair color, while pheomelanin contributes red and yellow hues. eumelanin, which is responsible for brown and black hair colors, and pheomelanin, which provides a red color to the hair. The levels of eumelanin present in the hair determine its darkness or lightness.
A higher concentration of eumelanin results in darker hair, whereas lower concentrations give lighter hair colors. Melanin production is influenced by genetic factors and can change over time, leading to changes in hair color with age. Additionally, melanocytes, which are the cells in the hair papilla, produce melanin, which then provides pigmentation to the hair.