FDA Approves Long-Lasting Sunscreen Chemical Bemotrizinol to Combat Skin Aging

The U.S. Food and Drug Administration (FDA) will allow the use of bemotrizinol in sunscreens, according to a June 12, 2026, report from Science News. This chemical filter provides long-lasting protection against solar radiation that ages skin, bringing U.S. sunscreen regulations closer to standards used in Europe and Australia.

Bemotrizinol, known in other markets as Tinosorb S, is a broad-spectrum UV filter. It absorbs both UVA and UVB rays. Science News reports the chemical is particularly effective at defending against the specific wavelengths of solar radiation responsible for skin aging.

The decision ends a long period of unavailability for the ingredient in the United States. While available globally for years, bemotrizinol remained absent from U.S. products due to the FDA’s rigorous and often slow approval process for new sunscreen active ingredients.

Why is bemotrizinol different from other UV filters?

Bemotrizinol is highly photostable. This means it doesn’t break down quickly when exposed to sunlight. Many common U.S. filters, such as avobenzone, are known to degrade under UV exposure, which reduces their effectiveness over time.

Because it remains stable, bemotrizinol provides more consistent protection throughout the day. According to Science News, this long-lasting quality reduces the frequency with which users must reapply the product to maintain a specific level of protection.

The filter also covers a wider range of the UV spectrum than many older chemicals. It targets both the UVB rays that cause sunburns and the UVA rays that penetrate deeper into the skin.

How does this protect against skin aging?

UVA radiation is the primary driver of photoaging. These rays penetrate the dermis, where they break down collagen and elastin fibers. This process leads to wrinkles, leathery skin, and age spots.

Bemotrizinol specifically blocks these aging rays. By providing a more robust barrier against UVA radiation, the ingredient helps prevent the structural skin damage that occurs with chronic sun exposure.

Most U.S. sunscreens label themselves as broad spectrum if they meet certain FDA criteria for UVA protection. The addition of bemotrizinol allows manufacturers to create formulas with higher, more stable UVA protection levels.

What does this mean for U.S. sunscreen options?

U.S. consumers will now have access to formulas that mirror those found in the European Union and Australia. For years, these regions have used a wider array of modern filters, including bemotrizinol, to provide superior UV protection.

The shift changes how companies formulate products. Manufacturers can now rely on a single, stable filter for broad-spectrum coverage rather than combining multiple unstable chemicals to achieve the same result.

• Stability: Bemotrizinol does not degrade as quickly as avobenzone.
• Spectrum: It provides comprehensive coverage across both UVA and UVB ranges.
• Application: Its long-lasting nature may improve user compliance with sunscreen use.

The availability of this ingredient addresses a long-standing criticism from dermatologists regarding the limited options for UV filters in the American market.

While the FDA has approved the chemical, the timeline for when bemotrizinol-based products will hit pharmacy shelves depends on individual manufacturer filing and production schedules.