Do You Really Need to Reapply Sunscreen That Often?
by Beth Skwarecki from Lifehacker on (#5MEVT)
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...