![]() This is the big question-and one that doesn’t have a clear-cut answer. Is physical sunscreen safer than chemical sunscreen? Belkin explains that we now know that mineral ingredients do also absorb some of the sun’s rays). “Chemical filters absorb the sun’s rays, deflecting their damage by turning them into heat.”īecause of this, physical sunscreens work immediately upon application, while chemical products need twenty minutes to penetrate skin and convert UV radiation into heat, says Dr. “Physical sunscreens primarily work by creating a physical barrier that reflects and scatters UV rays away from the skin’s surface,” she explains. These ingredients also work slightly differently, says dermatologist Divya Shokeen, MD, founder of Ocean Skin and Vein Institute, with several locations in California. These include things like avobenzone, homosalate, and octocrylene. How is physical sunscreen different from chemical sunscreen?Ĭhemical sunscreens use an entirely different set of non-mineral ingredients that are also approved by the FDA. “Titanium dioxide tends to be opaquer, and a bit harder to make cosmetically elegant on its own,” says dermatologist Dan Belkin, MD, of New York Dermatology Group in New York City. That’s because while zinc oxide can protect broad spectrum protection against all waves of UVA and UVB light, titanium dioxide is less effective at shielding your skin from long-wave UVA without being heavy and thick on skin. You may also come across products that use zinc oxide on its own. So, what are the minerals used in a physical sunscreen? That’d be zinc oxide and titanium dioxide, which you’ll often find used together in a formula.
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