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Why You Still Get Sunburned Even With SPF 50 Sunscreen On

SPF 50 doesn't block as much sun as you think — here's the math Do you reapply sunscreen throughout the day or just put it on once?

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SPF 50 doesn't block as much sun as you think — here's the math Do you reapply sunscreen throughout the day or just put it on once?

Transcript

SPF 50 isn't as strong as it sounds. SPF 50 blocks about 98% of UVB — sounds huge, right? But sweat, water, and touching your skin wipe it off fast. Reapplying every two hours is what actually keeps you protected. Follow for more facts that actually protect your skin.