Sun-soaking season is here, and that means that if you don’t lather up with sunscreen, you could be doing serious damage to your skin cells’ DNA, setting yourself up to develop a potentially deadly form of cancer.
it’s important to lather up with some protective sunscreen if you’re going to be spending time in the sun -especially during warmer summer months, when the UV Index rises and the sun becomes more potent.
We enlisted the help of two skin experts to explain just how long sunscreen lasts and how to re-apply it correctly.
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Misleading article title as the information does not indicate actual length of protection. This is an easy way to remember it and what I typically tell my patients. A cotton shirt has an approximate SPF of 4 which equals 15 minutes protection. Hence an SPF of 30 (about 8x more) will provide two hours protection. Technically higher SPF would mean longer protection, but practically, product loss due to sweating or removal by wiping or other means lessens the actual duration, so we recommend application every 2 hrs. I hope this is helpful.