Do You Really Need to Reapply Sunscreen That Often?
After spending some time in the sun, you’re supposed to reapply your sunscreen—every two hours, according to FDA guidelines. But what if you aren’t in the sun that whole time? And what if you use a mineral sunscreen, which doesn’t get “used up” the way some kinds of chemical sunscreens do? It turns out you still need…
from Lifehacker
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