Natural hair colors are determined by the amount and type of pigments present in the hair. The primary pigments are eumelanin, which gives hair black or brown shades, and pheomelanin, which provides yellow and red tones. The combination of these pigments results in a variety of hair colors, including black, brown, blonde, and red. Genetics play a significant role in determining an individual's natural hair color. Different genes influence the production and distribution of melanin, leading to the diverse range of hair colors seen in people around the world. Environmental factors, such as sun exposure, can also affect the appearance of hair color over time.