Scan a sunscreen bottle and your head may spin from all the different labels: “SPF,” “sport,” and “reef safe,” are among the more common terms you’ll see. But what do they all mean?
Related: Consumer Reports sunscreen test: Which brands came out on top? nscreen will protect you against UVA rays, which are responsible for skin cancer and skin aging, and UVB rays, which are responsible for sunburn and contribute to skin cancer.Also important is “SPF,” which stands for sun protection factor and is a measure of how well a sunscreen protects against sunburn. But what do the different numbers next to it mean? An SPF 100 does not provide twice as much protection as an SPF 50.
Now, take words like “reef safe” and “sport.” Neither is a regulated term, and the same goes for “dermatologist tested.” Some of the terms you see on sunscreens are just for marketing purposes and may not mean what you think they do.With lotions, you should use about a teaspoon per body part or area not covered by clothing, and for sprays, apply enough that your skin glistens, then rub it in.
One chemical some people worry about is oxybenzone, and you might see sunscreens labeled “no oxybenzone.” CR says that many sunscreens have been reformulated to no longer contain it.
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