Oxybenzone
Oxybenzone: Hard Pass! here's why
Reef SunSafe® Category
Status: Failed
Junior Category SunSafe®
Status: Failed
What's the Deal?
Oxybenzone (Benzophenone-3) is a chemical UV filter used in chemical sun protection products to absorb Ultraviolet A (UVA) and UVB rays.
It was once the most common sunscreen ingredient. Today, it's one of the most questioned.
Why it Matters:
Oxybenzone doesn't just sit on your skin.
Research has shown it can be absorbed into the bloodstream and detected in human blood, urine, breast milk and even in amniotic (fetal) fluid.
Laboratory studies have linked oxybenzone to reproductive disruption, developmental abnormalities and increased mortality in coral larvae and other marine organisms such as zebrafish.
It has also demonstrated endocrine activity in laboratory and animal studies. (mostly mice and rats) have reported reproductive, developmental, mammary gland and hormone-related effects.
Some consumers choose to avoid oxybenzone as a precaution, particularly if they are seeking to minimise exposure to ingredients under investigation for potential endocrine (hormone) effects.
That's why many brands have moved on—and why some marine destinations have restricted its use.
Ingredient Flags
- Human absorption and passing on to fetus
- Endocrine research
- Severe levels of Coral reef harm
- Environmental ecosystem concerns
- Regulatory restrictions
- Lab Made UV filters
The label tells you what's inside. We tell you what it means. > The Watch List™
SunSafe® Says
⚠️ Oxybenzone remains an approved UV filter in several countries, but it is also one of the most widely questioned sunscreen ingredients worldwide.
Now you know why.
The SunSafe® Reef and Junior Standards exclude oxybenzone as part of our human health and marine-focused assessment criteria.
We encourage brands to adopt ingredient transparency and continue investing in formulations that balance effective UV protection with evolving environmental science.
⚠️ Consider:
- Oxybenzone provides UV protection. One use of chemical sunscreen is better than getting sunburnt.
- Scientific research continues to evolve but made result in bias marketing.
- Some countries explicitly ban products containing oxybenzone.
- All mineral sun protection products formulate without it.
Related Articles & Reports:
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Related Research & Our References:
🪸 Laboratory studies investigating coral reef impacts
The Truth About Corals and Sunscreen – Smithsonian Ocean
Alternative (more scientific):
Environmental impacts due to the use of sunscreen products (2022 Review)
📋 Regulatory safety assessments from international health authorities
Supporting paper:
FDA Maximal Usage Trial – JAMA
🌊 Environmental reviews examining sunscreen wash-off into marine ecosystems
Environmental impacts due to the use of sunscreen products (2022 Review)
Critical Review of Organic Ultraviolet Filter Exposure, Hazard and Risk to Coral Reefs (2021)
🧪 Published research on oxybenzone absorption and exposure
Effect of Sunscreen Application on Plasma Concentration of Sunscreen Active Ingredients – JAMA (Matta et al., 2020)
Supporting review:
The Banned Sunscreen Ingredients and Their Impact on Human Health: A Systematic Review (Suh et al., 2020)
SunSafe® Ingredient Reports are designed to help consumers better understand the role of individual sunscreen ingredients through balanced, evidence-based summaries. As scientific understanding evolves, both The Watch List™ and The Ingredient List™ will continue to be reviewed and updated to reflect the latest available evidence while supporting informed decision-making for people and the planet.