Is SPF Dangerous? And More Sunscreen Truths Told
You've been told to wear SPF, oh, about a billion times. But then you hear that the FDA is rethinking sunscreen regulations and some states are banning ingredients, and everyone seems afraid of chemicals. So, what's the truth? We got answers from experts who are above the politicking and hype.There are 14 common sunscreen ingredients available in the United States, and they fall into two groups.
“If you put 10 dermatologists in a room and gave us a choice, we’d all pick the physical blocker,” says Dr. Dendy Engelman, assistant clinical professor of dermatology at Albert Einstein School of Medicine–Montefiore Hospital in New York City. “They’re more effective, safer for everyone—including babies—and work instantly, whereas you need to wait 15 to 30 minutes for chemical sunscreens to start protecting your skin.
“About every seven years, the FDA releases a proposal asking the scientific community for feedback on its sunscreen guidelines,” explains Dr. Steven Q. Wang, director of dermatologic surgery and dermatology at the Memorial Sloan Kettering Cancer Center in Basking Ridge, New Jersey.
Here’s an example the report gives to demonstrate why more research is needed: In studies done on rats exposed to oxybenzone—in higher levels than would be found in topical sunscreens—the ingredient contributed to fertility issues and endocrine-system disruptions.
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