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Not to tan your statuesque physique , although that may be why you tan . Tans are lifelike shell against the sun ’s ultraviolet radiation , which can damage skin tissue in the form of a sunburn ( as well as causecancerin the long - ladder ) .
Exposure to ultraviolet rays causes certain skin cells to give rise the paint melanin , which darkens through oxidisation . Enough beach bumming and those cell will migrate nigher to the skin ’s surface and produce more melanin , further darken the skin into a suntan . It ’s no wonder our body have developed the power to produce melanin .
Tanning is the body’s natural shield against uv rays.
The paint engross ultraviolet radiation and defends against further penetration of skin tissue paper . In other animals melanin proves diversely utile . It absorb heat , an essential for moth-eaten - full-blood organism . It colour bird feathers , fish scale and squid ink , and helps to conceal nocturnal animals . Melanin even absorbs scatter light inside the heart to sharpen vision .
But it appears that only human being will risk their skins for a little surplus control surface pigment .
