In people, melanin exists in three forms: eumelanin, pheomelanin, and neuromelanin.
Eumelanin: Have black and brown color
Pheomelanin: Have red or yellow color, responsible for red hair and freckles.
Neuromelanin: Is found in the brain, but it function remain vague.
What Role Do Melanin Play?
Not only do melanin provide pigmentation in people, melanin also plays an important biological role by providing protection against damage from the sun. Protection against UV light. Melanin also helps protect the cells of the epidermis, or outer layer of the skin, from UV light.