BASF’s Tinosorb S (bemotrizinol) approved by FDA as first new U.S. sunscreen active in 27 years
- FDA approved bemotrizinol (marketed by BASF as Tinosorb S) as a sunscreen active for the U.S. market.
- It is the first new UV filter approved by the FDA in 27 years.
- Bemotrizinol is a broad‑range UVB and UVA filter with absorption peaks near 310 nm and 340 nm and proven photostability.
- It acts as a photostabilizer for unstable filters (e.g., avobenzone), aids achieving critical wavelength >370 nm when combined with avobenzone or zinc oxide, and shows low percutaneous absorption suitable for sensitive skin.
Regulatory milestone
Bemotrizinol (BEMT), marketed by BASF as Tinosorb S, has received FDA approval as a sunscreen active ingredient and is the first new UV filter approved by the agency in 27 years.
Chemical profile and performance
Chemically known as Bis‑Ethylhexyloxyphenol Methoxyphenyl Triazine, Tinosorb S is a highly efficient broad‑range UVB and UVA filter with absorption peaks at approximately 310 nm and 340 nm and recognised global photostability.
Formulation benefits
Beyond primary UV attenuation, Tinosorb S functions as a photostabilizer for more photo‑unstable filters such as avobenzone, helping formulations maintain durable UVA protection and supporting achievement of a critical wavelength above 370 nm when combined with avobenzone or zinc oxide.
Safety and application
Its large molecular structure yields low percutaneous absorption and reduced irritation risk, making it suitable for high‑performance sunscreens and products for sensitive skin, and expanding options for U.S. formulators seeking long‑lasting broad‑spectrum protection.
Source: BASF
