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    what is spf

    0  Views: 440 Answers: 1 Posted: 14 years ago

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    SPF has a few meanings, but I think that the most popular one, the one i'm assuming you meant, is the Sun Protector Factor, which tells you the effectiveness of a sunscreen against UV-B (the ultraviolet radiation that causes sunburn). The higher the spf, the higher is the protection 



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