Oxybenzone Safety: The Most Absorbed Filter, and Where It Is Banned

Last updated September 22, 2026

Covers part of the UV range, but its absorption into the body is the real story.

1/5 protection rating
Partial UVB + UVA II

Oxybenzone (benzophenone-3) provides broad-spectrum UV protection but has become the most controversial sunscreen ingredient due to exceptional systemic absorption rates, endocrine disruption evidence, and environmental toxicity leading to regional bans.

⚠️ Regulatory Bans

Oxybenzone has been banned in Hawaii, Key West, US Virgin Islands, Palau, and Bonaire due to coral reef toxicity. The ingredient is under review by FDA for safety concerns.

Chemical Properties and UV Protection

Oxybenzone is a benzophenone derivative that absorbs both UVB and short-wave UVA radiation (290-350 nm). Used at concentrations up to 6% in the US, it's one of the few chemical filters providing partial broad-spectrum coverage in a single ingredient.

UV Absorption Capabilities

Peak absorption occurs at 288 nm (UVB) and 325 nm (UVA II), making oxybenzone effective against sunburn-causing rays. However, it provides minimal protection against long-wave UVA I (350-400 nm), requiring combination with other filters for complete broad-spectrum protection.

Systemic Absorption: Highest Among All Filters

FDA Clinical Trials (2019-2020)

Oxybenzone showed the highest absorption of every sunscreen ingredient the FDA tested: geometric mean peak plasma concentrations of 209.6 ng/mL in the 2019 pilot and 258.1 ng/mL in the 2020 trial's lotion arm, roughly 420 to 516 times the 0.5 ng/mL level below which the FDA may waive some additional nonclinical safety studies. That level is a testing threshold, not a harm threshold. Oxybenzone was still above it at day 21 of the trial, 17 days after the last application, in 96% (22 of 23) of participants.

Absorption characteristics that set oxybenzone apart:

Endocrine Disruption Evidence

Human Studies

Multiple epidemiological studies have linked oxybenzone exposure to hormonal changes:

Laboratory Evidence

Animal and cell studies demonstrate:

Environmental Impact and Bans

Coral Reef Toxicity

In laboratory tests, oxybenzone killed cultured coral cells at concentrations as low as 62 parts per trillion (0.062 µg/L, the four-hour concentration that killed 20% of the cells of the most sensitive of seven coral species). At higher concentrations it deformed coral larvae, bleached them at rising rates as the dose rose, and damaged their DNA.

Legislative Bans

Growing environmental concerns have led to bans:

Allergic and Photoallergic Reactions

Oxybenzone is the most common cause of photoallergic contact dermatitis from sunscreens:

Regulatory Status and Safety Reviews

FDA Position

The FDA has not made a final determination on oxybenzone's GRASE status, citing insufficient safety data. The agency has requested additional studies on:

International Regulations

European Union: Approved at up to 6% (under review for endocrine effects)
Japan: Approved at up to 5%
Australia: Approved at up to 10% — not banned, though a 2025 TGA safety review recommended restricting its permitted concentration
Canada: Approved at up to 6%

Special Population Concerns

Children

The American Academy of Pediatrics recommends avoiding oxybenzone in children due to:

Pregnant Women

Studies showing placental transfer and associations with birth outcomes have led many physicians to recommend pregnant women avoid oxybenzone-containing products.

What the Absorption and Coral Studies Actually Tested

The evidence behind this page tests oxybenzone as an ingredient, not branded sunscreens. The FDA's maximal-use trials describe their products by formulation type alone — lotion, aerosol spray, non-aerosol spray, pump spray — and neither paper names a commercial product.

FDA Maximal Usage Absorption Trials (2019-2020)

In the 2019 pilot (24 participants, seven days of sampling), oxybenzone reached geometric mean maximum plasma concentrations of 209.6 ng/mL from the first spray, 194.9 ng/mL from the second and 169.3 ng/mL from the lotion — 419 times the FDA's 0.5 ng/mL level at the top. Every participant who used an oxybenzone product was already above 0.5 ng/mL within two hours of a single application on day 1. The larger 2020 trial (48 participants, 34 blood samples over 21 days) found oxybenzone only in its lotion and aerosol products, at 258.1 ng/mL and 180.1 ng/mL; a single application on day 1 alone produced 94.2 and 85.4 ng/mL. Oxybenzone was still above 0.5 ng/mL at day 21 in 96% of participants — the longest persistence of the six filters tested, alongside homosalate.

References: Matta MK, Zusterzeel R, Pilli NR, et al. JAMA. 2019;321(21):2082-2091. doi:10.1001/jama.2019.5586. Matta MK, Florian J, Zusterzeel R, et al. JAMA. 2020;323(3):256-267. doi:10.1001/jama.2019.20747.

Coral Toxicity (2016)

The coral work that drove the regional bans also tested the chemical rather than a product: oxybenzone was applied to larvae of the coral Stylophora pistillata and to cultured cells from seven coral species. It deformed planulae, bleached them at rising rates with rising concentration, damaged their DNA and induced skeletal deformity, and the authors measured oxybenzone contamination of 0.8 to 19.2 µg/L at Hawaiian sites and 75 µg/L to 1.4 mg/L in the US Virgin Islands. No brand of sunscreen was tested.

Reference: Downs CA, Kramarsky-Winter E, Segal R, et al. 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. Archives of Environmental Contamination and Toxicology. 2016;70(2):265-288.

Five further product claims once sat in this section, each naming a commercial sunscreen: a Hawaiian coastal-water survey, a birth-weight study, an estrogenic-activity assay and two comparative SPF tests. None of their citations resolves to a real paper in PubMed, so all five were removed in September 2026 rather than left with a figure whose source cannot be named.

Recommendations

Given the extensive evidence of systemic absorption, endocrine effects, and environmental damage, health-conscious consumers may want to avoid oxybenzone entirely. Safer alternatives include:

For those who choose to use oxybenzone-containing products, minimize use on large body areas, avoid spray formulations that increase inhalation risk, and keep away from marine environments.

Recommended: Raw Elements Face + Body SPF 30 — a zinc-based, oxybenzone-free alternative

Our Verdict: 1/5

Oxybenzone offers broad-spectrum UV protection but has become the most controversial sunscreen ingredient due to extreme systemic absorption, environmental damage, and hormone disruption concerns.

Pros

  • Provides broad-spectrum coverage (UVB and UVA II) in single ingredient
  • Effective at concentrations up to 6%
  • Allows for lightweight, non-greasy formulations
  • Long history of use with established efficacy data

Cons

  • Highest systemic absorption - blood levels 419x FDA safety threshold
  • Banned in multiple locations due to coral reef toxicity
  • Strong evidence of endocrine disruption and hormone interference
  • Detected in 96% of US population including breast milk and urine

Frequently Asked Questions

Is oxybenzone banned in Australia?

No. Oxybenzone remains permitted in Australian sunscreens at up to 10% under TGA regulation. However, a 2025 TGA safety review recommended restricting its permitted concentration, and public consultation on reformulation is underway.

Is oxybenzone banned anywhere?

Yes — for environmental reasons. Hawaii, Key West, the US Virgin Islands, Palau, and Bonaire ban oxybenzone sunscreens over coral reef toxicity. National regulators (FDA, TGA, Health Canada, EU) still permit it, several with pending reviews or reduced limits.

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