"Sunblocks especu00ecficos UVA (360 - 400) and UVB (300 to 325)".UVB radiation of wave length of about 300 to 310 nm and UVA radiation of wave length of about 380 to 390 nm, each of which is in the sunlight.Induces MMPs (matrix metalloproteinases) in human skin that breaks down collagen in the dermal matrix.This degradation contributes to aging by light of human skin, which can be prevented by blockade of wavelengths of solar radiation.In contrast, diseases that result from an overproduction of collagen can be treated by exposing the affected with radiation with wavelengths in those regions.For this wavelength induce MMPs, but also inhibit the biosynthesis of collagen.For people with lighter skin so affected, the wavelengths of the grape are preferred because of the reduced quantity of erythema.While people with darker skin can be treated with UVB radiation, since they generally do not suffer from erythema.
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