2. Eumelanin and Pheomelanin

Eumelanin is the pigment that ranges from brown to black. It's dominant in hair, eyes, and skin and offers greater protection against UV radiation damage. Pheomelanin is an orange to red pigmentation that's also present in hair and skin. Those with red hair, for example, or naturally red lips, have more concentrated doses of pheomelanin.

phenmelanin melanin Delmaine Donson / Getty Images

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