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Skin Cancer
Frequently Asked Questions
12. What is SPF?
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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