How the type and distribution of melanin creates natural hair colour?

Melanin, the pigment responsible for hair color, comes in two primary types: eumelanin (brown to black) and pheomelanin (yellow to red). The ratio and distribution of these melanins in the hair follicles determine the natural hair color; for example, higher eumelanin levels result in darker hair, while greater pheomelanin levels produce lighter shades. Additionally, the specific arrangement of these pigments within the hair shaft influences the overall tone and richness of the hair color. Variations in melanin production are influenced by genetic factors, leading to the diverse range of hair colors seen in individuals.