Bemotrizinol Sunscreen Arrives in US After 25-Year Wait

Neutrogena and other manufacturers have begun placing the first sunscreens containing bemotrizinol on U.S. store shelves, ending a regulatory bottleneck that kept American consumers from accessing a UV filter used globally for decades.

The U.S. Food and Drug Administration approved the chemical, frequently referred to as BEMT, in June. Its arrival marks the first time since the late 1990s that a new sunscreen active ingredient has cleared federal review for commercial sale in the United States.

American shoppers have historically faced a narrower selection of UV filters than consumers in Europe or Asia. The FDA regulates sunscreens as over-the-counter drugs rather than cosmetics, subjecting active ingredients to pharmaceutical-level safety testing. That framework stalled the domestic introduction of modern filters long after they became standard abroad.

BEMT addresses a specific formulation challenge: blocking both UVB radiation, which causes sunburn, and UVA radiation, which penetrates deeper into tissue and drives skin cancer risk and premature aging. Previously, U.S. manufacturers relying on chemical filters had to blend multiple actives to achieve this broad-spectrum coverage. Mineral sunscreens using zinc oxide or titanium dioxide already provided dual protection by physically deflecting light, but those formulas often leave a visible white cast that discourages consistent use, particularly among people with darker skin tones.

Unlike older chemical filters such as avobenzone — the only other chemical UVA blocker available in the U.S. until now — BEMT does not rapidly degrade under direct sunlight. Avobenzone’s inherent instability forced formulators to add secondary stabilizing chemicals to prevent it from breaking down during wear. BEMT maintains its molecular integrity under UV exposure, simplifying product formulations and sustaining protection longer between applications.

The approval also resolves mounting toxicological concerns surrounding legacy chemical filters. Last month, the FDA revoked the approval of oxybenzone after determining the compound absorbs through human skin at higher rates than previously documented. Oxybenzone and octinoxate face outright bans in Hawaii and parts of Florida due to evidence linking them to coral bleaching.

BEMT avoids systemic absorption because its molecular structure is too large to pass through the epidermis into the bloodstream. During its safety review, the FDA evaluated clinical data involving more than 500 patients compiled by Dutch manufacturer DSM Nutritional Products. Researchers found blood absorption levels were nearly undetectable, and daily application over three weeks produced no allergic reactions or skin irritation. The agency subsequently designated the ingredient as generally recognized as safe and effective, a classification it shares only with zinc oxide and titanium dioxide.

Environmental questions remain unresolved. An estimated quarter of applied sunscreen washes off swimmers into waterways. While the European Union’s environmental agency has identified limited evidence of ecological toxicity associated with BEMT, comprehensive marine impact studies are still lacking. The U.S. government does not certify environmental claims like “reef safe,” leaving consumers without standardized guidance on aquatic effects.

The FDA continues to evaluate more than a dozen other sunscreen ingredients currently sold domestically under a broader safety overhaul initiated in 2019. Manufacturers must submit additional evidence to maintain market access for those compounds.

Dermatologists emphasize that no single chemical filter eliminates the need for behavioral precautions. NYU Langone Health dermatologist Dr. Jennifer Stein noted that clothing and shade offer superior baseline defense against ultraviolet damage.

Sunscreens containing BEMT are currently rolling out across major U.S. retail pharmacies and mass-market retailers following the summer distribution cycle.