who Spent his quarantine, pale and sun starved people are starting to get out on the streets, lawns and, if lucky, to the beaches to enjoy the sun and to purchase the first, preferably bronze, but more often red tan. Or simply — burn.
All familiar with that unpleasant burning and itching that occur after the first hours stay under the influence of solar radiation. Yes, at first glance, it’s not scary, and why not to be patient, because the reward will be leather chocolate brown (again, if you’re lucky and she doesn’t get off you, turning it into not the most graceful leopard).
in addition they say that the sun is useful that ultraviolet light kills germs, helps the body produce vitamin D, which adjusts circadian rhythms. All this is true, but it’s no wonder this is called radiation. In fact it is nothing more than a sunburn, which causes the body great harm at the cellular level.
sunlight is an electromagnetic wave, and once they have overcome the outer space and earth’s atmosphere, we ultimately derived two types of ultraviolet radiation: middle UV And (in English terminology UVA) and medium UV-B (UVB). (There is also the far and extreme UV rays, but these rays are almost completely stopped by the atmosphere).
UVA Rays is not likely to cause you sunburn, but they penetrate deep into the skin, and over time, this exposure will give the cumulative effect of sagging skin.
UVB Rays carry more energy, and their effects are immediately visible in the form of redness and itching.
In General, the ultraviolet radiation damage the skin by attacking the DNA molecules, proteins, fat and so on. When these molecules absorb too much solar energy, violated the intramolecular communication, changing molecular structure, and previously resistant cells in which the molecules had a certain shape and to perform specific tasks, are Hawking. This can cause breaks the DNA code and stops producing the necessary proteins.
fortunately, every cell has a whole army molecules autocorrectiontool, which can interfere and fix ruined DNA.
If you damage the cells became critical, it triggers apoptosis, or suicide. Sounds harsh, but without it your skin will accumulate too much cell-cripples, and the skin ceases to perform its functions — with very unfortunate consequences for the whole organism.
Here voznikat a kind of vicious circle: the code of self-destruction inherent in your DNA, but if this division DNA corrupted, or escaped fix, then apoptosis will not be started, and the cell will begin to grow beskontrolbut. So often and there are cancers cancer.
You probably noticed that inflammation and itching occur immediately, but after a few hours in the sun. This is because the process of suicide of damaged cells does not launch immediately, at first they accumulate in your skin, then the action takes the immune system, but then…
White blood cells rush to the skin, where the accumulated dead and dying cells, they are beginning to clean the body from fragments of dead cells, your capillaries swell, they begin to pass through the walls of the fluid is a natural process but your skin when it is red, itchy and sore.
it Takes a few hours, cleaning is completed and everything comes back to normal, only in your skin start the process of production of melanin — the pigment that is responsible for blocking ultraviolet rays and gives your skin that most coveted tan.
of Course, sun burn won’t kill you, at least immediately. Because every time you get a sunburn, your cells are severely affected by solar radiation, and at the DNA level, and sooner or later it can lead to cancer.
If you know that burn quickly in the sun, or just arrived at the resort and scare away others with their pale bodies, in the first days try to wear a shirt or dress with long sleeves, sunglasses and a hat with a wide brim.
Clearly that is completely hide from the sun you will not succeed, and it is not necessary, because there are also sunscreen. Usually they share at SPF-factors from 15 to 50 or even 75, protecting the skin at 95-99,5% for at least half an hour from both types of ultraviolet rays.
of course, it is necessary to thoroughly cover the cream all over the skin, wait until it is well absorbed, to renew the coating every two hours, but if you decided to swim (many people say that the water tan grabs you stronger and faster), make sure that your cream is water — resistant.
If you follow these elementary General requirements, it is likely to acquire a great tan without the accompanying unpleasant sensations and most importantly — no long-term damage to health.
