10. What is SPF?
Answer
SPF is a sun protection rating. The SPF of a sunscreen is a measure of the time it takes to produce a sunburn in a person wearing sunscreen compared to the time it takes to produce a sunburn in a person not wearing sunscreen. This varies from person to person, so be sure to reapply sunscreen every 2-3 hours.
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Now: 2012-02-08 09:47
Now: 2012-02-08 09:47