UVC rays do not reach the surface of the earth and we will not consider, but others. The other two types of ultraviolet rays not only reach the ground, your body and your skin, but they also penetrate the skin itself. Damage to the skin, can cause as UVA, UVB rays.
Tan, in fact, is the most obvious sign that you are already in the sun too long. But damage from the sun is not always clearly visible and so obvious. And if you still do not see the effects of sunburn, your skin already it feels as beneath the surface of the skin, ultraviolet rays are able to change your DNA, causing your skin to age prematurely. Over time, damage to DNA may contribute to the formation of certain skin cancers, including fatal - melanoma.
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How soon you will have a tan depends on:
• The type of your skin;
• The intensity of the sun's rays;
• And how long you are exposed to the sun.
Signs Tan - When you have too much tan (burnt, one word), your skin turns red (shades from pink to dark red) and starts to hurt a little. If you have received a more serious burn, then you may receive the swelling and blisters from sunburn.c