Why and how to tans go away?
In: Biology
Basically because humans shed skin.
You get a tan because UV light from the sun activates melanocytes, cells in the basal layer of your skin. These cells have a certain base level of production which is why skin isn’t completely white. But in response to increased UV light, these melanocytes temporarily start to produce more melanin which dyes your skin darker. Over time as new skin cells grow the melanin is carried to the surface and goes away.
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