FDA Approves Bemotrizinol, First New Sunscreen Filter in Over Two Decades

For the first time in more than 20 years, the U.S. Food and Drug Administration has expanded its list of approved active sunscreen ingredients by authorizing the use of bemotrizinol, also known as BEMT. While this chemical filter has been a staple in European and Asian skincare markets for decades, its introduction to the U.S. market marks a significant regulatory milestone. The approval follows a lengthy application process that began in 2005, highlighting the historically slow pace of sunscreen innovation in the United States compared to international standards.

Bemotrizinol functions as an organic chemical filter, which absorbs ultraviolet (UV) radiation and dissipates it as heat. Unlike traditional mineral-based physical filters—such as zinc oxide or titanium dioxide—which can leave a visible white residue on the skin, bemotrizinol offers a clear, more cosmetically elegant application. Its inclusion is expected to improve the overall quality and efficacy of U.S.-based sunscreens, providing consumers with more options that balance protection with user comfort.

The significance of this approval lies in the critical difference between UVA and UVB protection. While current U.S. standards primarily focus on measuring UVB radiation—which is responsible for sunburns—UVA rays penetrate deeper into the skin, contributing to premature aging and long-term structural damage. Experts have long argued that U.S. sunscreens have lagged behind global counterparts in providing comprehensive UVA coverage. By integrating a more advanced filter like bemotrizinol, the U.S. is taking a necessary step toward closing this protection gap, potentially offering the public more robust defense against the full spectrum of harmful solar radiation.