When your epidermis (outer skin) is exposed to UVA and UVB
rays, the melanin in your cells is in a way burned
thus darkening the appearance of your skin tone. Those with
naturally darker...
Mitosis causes a suntan on your skin to fade. Mitosis is the division of cells to create new daughter cells. After you have/get a suntan. Your cells continue to divide and your old cells die off...