Melanin is a natural pigment found in most organisms, it is a substance that gives the skin and hair its natural color. In the skin, there are cells called melanocytes, which form melanin. Human beings benefit a lot from melanin; for instance, melanin provides a natural protection against the harmful effects of ultraviolet rays from the sun. Also important from melanin is that it serves to minimalize the number of light beams that enter the eyes, and it provides for the absorption of scattered light within them.

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