NEW YORK (CNN) -- Michelle Crawley says she's a "freak" about putting sunscreen on her two girls. Emily Crawley and her dad, Jere, hit the pool on the first day of a Florida vacation, which left Emily sunburned. "They are both pretty fair skinned," says the West Chester, Ohio, mother of two. So every time Emily, 6, and Claire, 3, go out into the sun, she slathers them with SPF 30 or higher . But during a recent trip to Key Largo, Florida, Crawley's vigilance wasn't enough. "I wasn't sure if it was my technique, the sunscreen or being in Florida," Crawley said, but "that evening they were just fried beyond belief."
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Environmental Working Group: 4 out of 5 sunscreens tested don't adequately protect
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Group says chemical in sunscreens can penetrate skin and pose health concerns
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FDA allows the chemical in sunscreens, says it is safe
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Sunscreen manufacturers say their products are safe and effective
The higher the @placeholder, the better the protection against sunburn.