防晒霜选择（Sunscreen selection）.doc

防晒霜选择（Sunscreen selection） Did you stop the sun? We call almost every day, but people who do not pay attention to sun are still everywhere. Spring March, whitening season began again - to suppress the negative effects of melanin, that is, to reduce the skins natural protection against ultraviolet light - so, the protection of UV, more urgent! Sunscreen, just use it on the line? Some people think that the essence, cream, make-up should be non big without, and sunscreen products, like cleaning products, pick cheap casually with the line, or that as long as the SPF value for this season, what is not the same? But experts tell us: the quality of all types of sunscreen products are actually very different, even if the same SPF, protection effect is still far from the same. How should I choose it? To sum up expert opinions, we propose to seize the following points: - full wavelength UV protection Mainly for long wave ultraviolet UVA (320-400nm) and UVB UVB (290-320nm), comprehensive protection, it should be different wavelengths of ultraviolet light all blocked. Zinc Oxide physical sunscreen and titanium dioxide can block (reflection and scattering) almost all wavelengths of ultraviolet light; but because of the heavy metals in the titanium dioxide titanium is deposited in the skin, easy to cause, long-term use will have a negative effect, so we should try to use sunscreen products to Zinc Oxide. The new FANCL 30 sunscreen lotion SPF30/PA+++, Avene SPF30+, Clinique excel natural sunscreen whitening sunscreen sunscreen SPF40/PA++, DHC SPF25/PA++, SOFINA Day Emulsion SPF24/PA+++, are pure physical sunscreen products. Each chemical sunscreen can only filter a certain wavelength of ultraviolet light, so several chemical sunscreens need to work together in order to fully resist ultraviolet radiation. LOREALs proprietary MexorylXL sunscreen isolation system consists of 4 chemical sunscreens, capable of isolating UVA and UVB from all wavelengths. HR elite sunscreen lotion SPF40/