Benzophenone-3
a.k.a. Oxybenzone
CAS 131-57-7
Oxybenzone (Benzophenone-3) is an older organic UVA2 and UVB filter that is photostable. It is approved up to 6% in the EU and US and 5% in Japan and Korea, with the EU classifying it as restricted. Available safety data flags it as an endocrine disruptor and reef-toxic, with an EWG score of 8.
Frequently asked questions
Why is Oxybenzone controversial?
Available data flags it as an endocrine disruptor and reef-toxic, with an EWG score of 8. These concerns drove EU restriction and the shift away from oxybenzone in many newer formulas.
Is Oxybenzone reef-safe?
No. It is flagged as reef-toxic in this data and is commonly singled out in reef-protection discussions. Mineral or non-flagged organic filters are typical alternatives where reef impact matters.
What UV does it cover?
It absorbs in UVA2 and UVB, so it offers partial broad-spectrum coverage but does not reach UVA1. Modern formulas often use Tinosorb M or zinc oxide for fuller UVA coverage instead.
Is it still legal?
Yes. In this data it is approved up to 6% in the EU and US and up to 5% in Japan and Korea, though the EU lists it as restricted, reflecting the safety concerns noted above.