New Sunscreen Ingredient Approved After Decades

For the first time since the late 1990s, the U.S. Food and Drug Administration has approved bemotrizinol (BEMT) as an active ingredient for over-the-counter sunscreens. This marks a significant expansion of available sunscreen options for consumers.

BEMT is a chemical sunscreen filter known for its broad-spectrum capabilities, meaning it can simultaneously protect against both UVA and UVB rays. This ingredient has been in use for decades in other countries like Europe, Asia, and Australia.

While chemical sunscreens absorb UV rays and convert them to heat, their presence in the bloodstream has prompted ongoing safety research. Mineral sunscreens, using zinc oxide or titanium dioxide, are considered safer as they form a physical barrier on the skin.

BEMT offers potential safety benefits due to its relatively large molecules, leading to less absorption into the bloodstream. It is also more photo-stable, breaking down more slowly under sunlight. Notably, it is designated as safe for children as young as 6 months old.

The FDA approval order becomes effective in August 2026, meaning BEMT-containing sunscreens will not be available in U.S. stores until then. Initial U.S. products may combine BEMT with existing ingredients for enhanced effectiveness and cosmetic appeal.

Until early 2028, DSM-Firmenich AG holds exclusive rights to sell its BEMT formulation, known as Parsol Shield, to U.S. manufacturers. BASF also sells it internationally as Tinosorb S.

Despite this approval, the U.S. still has fewer approved sunscreen ingredients compared to many other countries. The FDA's rigorous safety standards, though sometimes leading to slower approval of newer ingredients, ensure a careful evaluation process.

Experts recommend using any broad-spectrum sunscreen with an SPF of 30 or higher that is water-resistant. During heat waves, mineral sunscreens might be preferable due to their stability. Proper application, including reapplication every two hours and after swimming or sweating, is crucial for effective protection.

Sunscreen efficacy can be compromised by prolonged exposure to heat. Keeping sunscreen containers out of direct heat and checking for component separation are important for maintaining product effectiveness.