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ponedjeljak, 10.01.2011.

Sunscreen to protect our skin?

louis vuitton outlet In addition to the visible solar radiation, but also including smaller wavelength than visible light, ultraviolet light, but more intense. Because it is not within the visible spectrum, the human eye can not be perceived. However, once exposed to the sun, invisible but will endanger our health. When these high-intensity ultraviolet radiation to your skin, will produce free radicals and may directly damage your DNA. Short-term ultraviolet radiation will burn the skin, and long-term damage is the cause of skin aging, accelerate and generate millions of new annual cases of skin cancer. Earth's surface UV radiation to our body, including ultraviolet B (UVB) and ultraviolet A (UVA) two.

Shorter wavelength UVB ultraviolet rays penetrated the skin is not very deep, they will severely damage DNA, also induced skin cancer, sunburn and the main reason. UVA ultraviolet rays penetrate more, it can produce deep dermal layer of skin, free radicals, long-term exposure to UVA irradiation causes premature skin aging and immune system problems.

UV sunscreen products in the skin and reach the surface of our skin, causing damage put them isolated before, like put on our skin, a body armor. It contains UV-absorbing organic molecules and shading can be absorbed, scattered and reflected UV inorganic pigment. In order to achieve the best protective effect, a dose of sunscreen products must contain sufficient organic molecules and inorganic pigments shade and evenly to the face in order to fully absorb.

Sunscreen products labeled SPF (Sun Protection Factor) value represents the SPF of the product. Sunscreen products with high coefficients of most of the skin barrier sunburn photons. In short, the use of a sunscreen SPF factor of 10, after each 10 per beam irradiation in the ultraviolet to the skin; and use sunscreen SPF factor of 20 after exposure to ultraviolet radiation on the skin only 5 beam. Because sunburn caused mainly by UVB, while the value of a high SPF sunscreen products may do nothing for most of UVA ultraviolet light. Therefore, in order to give the skin a more comprehensive protection, sunscreen must be isolated from the function of UVA ultraviolet radiation. This is in the U.S. market is the ingredients of sunscreen products must contain sufficient quantities of zinc oxide, benzene, ketone Asian Buddhist or titanium dioxide.

Ovaj blog je ustupljen pod Creative Commons licencom Imenovanje-Dijeli pod istim uvjetima.

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