Published on 6/17/2026
Bemotrizinol is the latest addition to the list of active ingredients permitted for use in over-the-counter sunscreens in the United States, after the US Food and Drug Administration announced its official inclusion for the first time in more than 20 years.
This update is considered one of the most prominent changes in regulating the American sunscreen market in recent decades, as no new active substance has been added to this category since the late 1990s, even though pemotrizinol has actually been used in Europe, Asia, and Australia since the beginning of the millennium.
What is pemotrizinol?
Pimotrizinol is a chemical compound from the category of organic UV filters. It was developed by a Swiss company in the late 1990s, and entered the first European formulations of sunscreens in 2000 before spreading to Asia, Australia, and Canada.
The material absorbs both types of harmful ultraviolet rays:
- (UVA) associated with wrinkles and photoaging.
- (UVB) is responsible for skin burns.
This energy is then converted into less harmful energy, reducing skin cell damage and supporting the prevention of skin cancer and premature aging. This is why it is classified as a broad-spectrum filter that provides balanced coverage of short- and long-range rays.
Why did it spark so much interest?
Scientific reports and professional bodies believe that pimetrizinol combines a number of characteristics that dermatologists have been demanding for years in modern filters:
- High photostability: It tolerates direct exposure to the sun without degrading quickly, unlike ingredients such as avobenzone which need supporting components to remain stable.
- Relatively long protection: Thanks to its stability, it maintains its effectiveness for a longer period than some old chemical filters, although the medical recommendation is still to reapply the sunscreen approximately every two hours when exposed to the sun continuously.
- Low systemic absorption: Pharmaceutical studies have shown that its penetration into the bloodstream is very limited, and there are no signs of sustained accumulation above the threshold that raises regulatory concern.
- Good skin tolerance: Test data shows that the material rarely causes skin irritation even with repeated use, making it an attractive option for those who are allergic to some other chemical filters.
For these reasons, some dermatologists describe the adoption of pemotrizinol in the American market as a “big step” after sunscreens there continued to lag behind Europe in the quality of filters available.
What distinguishes it from other ingredients?
Most chemical sunscreens circulating in the United States for years have relied on avobenzone to cover the UVA spectrum, but it is a less photostable substance and may decompose under sunlight, producing compounds that may cause irritation to some users. In contrast, pemotrizinol offers:
- Wide spectrum coverage (UVA) and (UVB) alone.
- High stability under the sun without the need for a large amount of supporting materials.
- Transparent and light formulas that do not leave a white residue on the skin, unlike zinc and titanium in traditional mineral condoms.
Pimotrizinol can be introduced into various formulations such as creams, light daily sprays, tinted moisturizers and SPF foundations, often in concentrations of about 6% in the final product.
What about safety and daily use?
The FDA describes pemotrizinol as generally safe and effective for use in sunscreens for adults and children six months of age and older, with low levels of transdermal absorption and no indications of reproductive harm or hormonal effects in available studies.
However, the basic safety principle remains the same:
- The lack of absorption does not mean its complete absence, but rather the concentrations that were monitored are considered within regulatory safe limits.
- No substance is a substitute for general recommendations, such as avoiding peak sun, using protective clothing, hats, and glasses, and reapplying sunscreen regularly.
As for those who suffer from highly sensitive skin or have a history of sensitivity to sunscreens, or pregnant women who prefer extra caution, it is best to consult a dermatologist to choose the most appropriate formula, whether it is mineral, chemical, or a combination of both.
What does all this mean in practice?
As for the Arab user, he may have already dealt with pemotrizinol through imported European or Asian sunscreens before the US Food and Drug Administration’s decision, as its adoption there came late compared to the rest of the markets.
The administration’s decision does not mean that all current products will be replaced immediately, but rather that sunscreen manufacturers in the United States will be able to introduce this substance into upcoming formulations, which may later be reflected in global products exported to our region, with formulations that are more stable and transparent on the skin.
Ultimately, pimotrizinol sets a higher bar for modern chemical sun filters: broad protection, UVA stability, and acceptable texture, with relatively reassuring safety data, moving closer to the “perfect filter” debate that dermatologists and researchers have been pursuing for years.
