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☀️ You see "SPF" on your sunscreen bottle, but what is SPF (spoiler: sun protection factor) and is higher really better? In the latest video from our #MSKExplains series, MSK dermatologist Dr. Erica Lee breaks down what SPF actually means, how it protects your skin, and why applying (and reapplying) sunscreen matters more than chasing the highest number. Watch to learn more and share to help protect others this summer. | Memorial Sloan Kettering Cancer Center
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