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SPF 50 vs SPF 100 - Is Higher SPF Actually Better?
SPF 100 doesn't block twice as much UV as SPF 50 — here's what the numbers actually mean Do you reapply sunscreen throughout the day or just put it on once?
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SPF 100 doesn't block twice as much UV as SPF 50 — here's what the numbers actually mean Do you reapply sunscreen throughout the day or just put it on once?
Transcript
SPF 100 must be double the protection — right? SPF measures burn time, not a strength multiplier. SPF 50 blocks 98% of UVB — SPF 100 blocks 99%. One percent. Reapplying every two hours does far more than chasing a higher number. Follow for more myths like this one.