How often should you apply sunblock when you are in the sun?

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Answers:
Common Sense Tips on Sun Block Protection:

Use sun block every day–even on cool or cloudy days, 80 percent of the UV radiation can still penetrate through the clouds.

Apply sun block at least 30 minutes before going out in the sun to allow time for the chemicals to be absorbed into or bond on top of the skin. Use broad-spectrum sunscreen products that block out both UVA and UVB rays.

Use waterproof sunblocks (very water resistant) that can not be easily washed off through perspiring or swimming. Reapply sun block every two hours, and after swimming or sweating.

How often should you apply sunblock when you are in the sun?

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