Shining a light on sunscreen guidelines

Dermatologists are at odds with some points made by the Environmental Working Group. Here's a look at some of the main issues.It's a conundrum. You want to have fun in the sun, but you don't want skin cancer or — heaven forbid! — wrinkles. Maybe you think you have it made in the shade with sunscreen. But while most sun and skin experts would advise you to slather the stuff on like crazy, many also would warn you not to rely on it too, too much.

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