Bioré markets some of its products in the U.S., but its ultra-popular facial sunscreen contains bemotrizinol, a chemical filter that’s popular overseas but has not yet been approved in the U.S. The substance is on a short list of those that Dobos told me have the strongest case for FDA approval—it’s widely used around the world and very effective at absorbing UV rays. Another ingredient at the top of her list is bisoctrizole, a favorite in Europe, which she said degrades more slowly in sunlight, is less readily absorbed by the wearer’s skin, and helps stabilize other UV filters when mixed with them, potentially improving their efficacy