How SPF ratings are derived

by beata89 | August 8, 2009 at 10:08 pm
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Few of us know how SPF ratings are derived and therefore how they are relevant to our needs. Ranging from as low as two to as high as 60, these numbers refer to the product’s ability to screen or block out the sun’s burning rays.

nagba
nagba
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at 01:42 on August 9th, 2009

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nagba
First Flagged at 1:42 AM, Aug 9, 2009 by nagba

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