Several active ingredients in popular sunscreens are absorbed into the body rather than just sitting on the skin, FDA study finds, but health effects are unknown.
In order for sunscreen companies to avoid safety testing of the chemicals in their products, no more than 0.5 ng/mL of the active ingredients can be absorbed into the body. When the researchers analyzed the amount of these chemicals in the blood samples, they found all at higher levels than that threshold. The biggest difference was for oxybenzone, which was found to exceed 20ng/mL on day seven of the study.
What we do know is that UV rays damage the skin and the risk of skin cancer is higher without sunscreen, Newsom said. “So sunscreen should still be used given the epidemic of UV-related skin cancer,” she said. “Our concern is that the public will hear this and stop protecting their skin from sun damage.”
“Importantly, the study authors conclude that individuals should not refrain from the use of sunscreen, which the AAD encourages as one component of a comprehensive sun protection plan as sunscreen use has been shown to reduce the risk of skin cancer in a number of scientific studies,” AAD President Dr. President George J. Hruza said in a statement.
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