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InclinedPlane
on July 27, 2010
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What Do You Lack? Probably Vitamin D
SPF means "sun protection factor". SPF 10 is not "completely exposed" it's actually a very high level of protection, it means that it will take 10x as much sun exposure to lead to the same amount of UV-B reaching your skin, more or less.
Consider applying for YC's Summer 2026 batch! Applications are open till May 4
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