Oxybenzone
Benzophenone-3
A chemical UV filter linked to hormone-disruption concerns and coral reef damage; several places have banned it outright.
Banned in Hawaii and Key West; mineral filters are the safer swap
Technical data
Dose-response breakdown and source citations behind the rating above.
Safety by concentration
Cited sources
Toxicopathological Effects of the Sunscreen UV Filter, Oxybenzone (Benzophenone-3), on Coral Planulae and Cultured Primary Cells and Its Environmental Contamination in Hawaii and the U.S. Virgin Islands
Downs et al., Archives of Environmental Contamination and Toxicology · 2016
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Frequently asked questions
Is Oxybenzone safe?
A chemical UV filter linked to hormone-disruption concerns and coral reef damage; several places have banned it outright. Banned in Hawaii and Key West; mineral filters are the safer swap