first new sunscreen ingredient approved by the fda in 20 years
The FDA has officially added bemotrizinol (also known as BEMT, Tinosorb S, or Parsol Shield) to the over the counter sunscreen monograph (M020). This marks the first new permitted sunscreen active ingredient in the United States since the late 1990s.
Bemotrizinol is now deemed GRASE (generally recognized as safe and effective) for adults and children aged 6 months and older in concentrations up to 6%.
We are slowly working towards modernizing US sunscreen regulations, which have historically lagged behind international standards.
Why is bemotrizinol better?
Bemotrizinol has several advantages over existing options in the sunscreens that are currently on the market.
Photostability: Unlike current US organic filters like avobenzone, which notoriously degrades in sunlight, bemotrizinol is highly photostable (stable in sunlight), maintaining its protective abilities under UV exposure.
Broad-spectrum coverage: Bemotrizinol provides broad-spectrum protection against both UVA (“A”ging) and UVB (“B”urning) rays.
Safety: Research shows low systemic absorption from application to the skin, addressing recent regulatory and consumer concerns surrounding older chemical filters like oxybenzone.
Proven performance: Bemotrizinol has been safely and successfully utilized in European and Asian markets for years. Its approval brings sun care in the United States closer to modern international standards.
What’s the Vista View?
This is a well-studied modern sunscreen filter that should improve US sunscreen options, especially UVA protection and wearability. It’s not magic: still use SPF 30+, apply an adequate amount, make sure to reapply, rely on sun-protective barriers (hats and clothing), and use tinted/iron oxide products when visible light protection matters.
about the author
Dr. Trisha Scharff
Dr. Trisha Scharff, MD is a board-certified dermatologist providing expert medical and cosmetic dermatology services in St. Louis, MO.
She is a Castle Connolly Rising Star.
