The study of harmful effects of the sun's rays are not the first year. Before scientists found that UV part of solar radiation has deferred damaging effect.
Ultraviolet light after fade within 3-4 hours, it damages the genetic code. Melanin is a substance that forms a tan. While the influence of solar radiation on the molecules of melanin and are excited in this state, a few hours after cessation of exposure to the sun. During this period, melanin can bind with enzymes, to generate synthesis of dimers of CYCLOBUTANE.
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Melanin acts as batteries, nakaplivaya energy and emit it over time. Based on this information, the scientists plan to create drugs that suppress the negative effect of melanin in the sun.