The Tanning Process at the cellular level.

Tanning takes place on the outer layer of skin, which is the epidermis which contain melanocytes. When the melanocytes are exposed to UVB rays they produce melanin, the pigment that allows you to tan. When the melanin is treated to UVA rays, it causes the melanin to darken. Cells in the epidermis are constantly reproducing and pushing the older cells upward. When this happens the cells that contain melanin are removed thus causing your tan to fad. In order to keep your tan you need to continuously be providing your cells with UVA and UVB.


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