UV rays
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What do people in general need to know about skin cancer, other than not to stay in the sun too long esp. without sunscreen?
Asked by chefl | 11 responses -
Do our eyelids block out UV light?
Asked by jcs007 from iPhone | 2 responses -
How do you test to see if sunglasses truely block 100% of UV rays?
Asked by jcs007 from iPhone | 3 responses
