Charlotte, NC
Think SPF 50 keeps you safe all day? You are wrong. Sunscreen doesn’t work that way! Here’s how it really works: SPF, or Sun Protection Factor, tells you how much of the sun’s UVB rays are blocked. These UV rays cause sunburn and can lead to skin cancer. That’s why we need protection. For example, SPF 30 blocks about 97% of UVB rays. SPF 50 blocks about 98%. But—no sunscreen blocks 100%. So, if a higher SPF blocks more rays, can you simply apply it once and stay protected all day? Nope! Sunscreen wears off when you sweat, swim, or even just touch your skin. That’s why you need to reapply sunscreen every 2 hours to keep your skin safe.
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