Bemotrizinol
Description
Broad-spectrum oil-soluble organic UV filter with dual absorption peaks at approximately 310 nm and 340 nm. Photostabilizer for avobenzone and other photolabile filters via triplet-state energy dissipation through S1→S0 internal conversion pathway. High molecular weight of 627 Da results in minimal skin penetration and surface-film behavior.
Function
Properties
Regulatory Status
Best-in-class broad-spectrum organic UV filter with outstanding safety and efficacy profile. Dual UV peaks at approximately 310 nm and 340 nm with photostability and high molecular weight (627 Da) that remains on skin surface. No endocrine activity confirmed in regulatory assessment. Functions as triplet-state quencher stabilizing avobenzone and other photolabile filters. Approved at 10% in EU, Australia, and Japan with over a decade of safe global use. FDA Proposed Administrative Order OTC000039 proposes GRASE status at 6% with determination anticipated March 2026, which would make it the first new US monograph sunscreen ingredient since 1999.
FDA Proposed Administrative Order OTC000039 (December 2025) proposes GRASE status at up to 6%. Initiated by DSM-Firmenich Tier 1 OMOR (September 2024). FDA noted low skin absorption and rare skin irritation. GRASE determination anticipated by March 2026. If finalized, would be the first new Category I UV filter added to the US monograph. Final order may follow in mid-to-late 2026 before market availability.
Ratings
Identifiers
No registry identifiers available for this ingredient.