Tanning is nothing but defending the body against the disastrous effect of ultraviolet radiation. Specialized cells are activated in the skin as a result of the sun, melanin -producing, pigment, thanks to which the skin becomes brown. Melanin has radiation absorption properties. The body also defends itself by increased sweat production, as well as thickening of the corneal layer of the skin. Too much a dose of sun, however, this precise defense mechanism can completely diverge.
Moderation in using the sun- This is primarily recognizing your own, individual sensitivity. Blondes with fair complexion are much less resistant to the sun than people with a smaging complexion. They should therefore limit the tanning. The same applies to these people – regardless of the skin tone – in which various changes appear quickly, np. reddening, itch, and especially swelling. That sign, that the sun is harmful.
Under the microscope, The skin destroyed by the sun is actually no different from old skin. Is clearly thinner, it lacks sufficient water and collagen, which gives elasticity and firmness. In the liquidation of the effects of "sunny recklessness", doctors use a retin today, a derivative of vitamin A, used until recently in severe cases of youthful acne. It destroys the surface layer of the skin and at the same time stimulates the formation of a new one, healthier. Retha is a medicine only used under the supervision of a doctor.