FDA: Sunscreen chemicals enter bloodstream at potentially unsafe levels



For years, you've been urged to slather on sunscreen before venturing outdoors. But new U.S. Food and Drug Administration data reveals chemicals in sunscreens are absorbed into the human body at levels high enough to raise concerns about potentially toxic effects.

The levels far exceed the FDA-set threshold which require topical medications to undergo safety studies, said Dr. Kanade Shinkai, a dermatologist with the University of California, San Francisco School of Medicine.Bloodstream levels of four sunscreen chemicals increased dramatically after test subjects applied spray, lotion and cream for four days as directed on the label, according to the report. 

[...] Most sunscreens on the shelf use chemicals such as oxybenzone, avobenzone and octocrilene to block harmful rays. These organic chemicals absorb ultraviolet radiation and convert it into a small amount of heat.

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