This week, sun care made headlines for the first time in a long time. On June 9, 2026, the FDA added Bemotrizinol (also called BEMT) to its list of approved sunscreen active ingredients — the first new chemical UV filter to clear U.S. regulators in more than two decades. If you've been following sun safety news, you've probably seen the buzz: outlets from CNN to NPR to the FDA itself are calling it a milestone for American sun care.

What is Bemotrizinol, and where does it come from?

Bemotrizinol — abbreviated BEMT — is a synthetic, oil-soluble organic compound that works by absorbing UV radiation rather than physically blocking it the way Zinc Oxide does. It has two absorption peaks that give it broad-spectrum UVA and UVB coverage, and it's notably photostable, meaning it holds up well under intense sun without breaking down the way some older filters do. It can even help protect other active ingredients, like avobenzone, from degrading in sunlight.

It's not actually new — it was developed by a Swiss chemical company in the late 1990s and has been used in European sunscreens since 2000, with adoption following in Australia, parts of Asia, and Canada. If you've shopped for sunscreen in Europe, you may have unknowingly used it already: it's best known there under the brand name Tinosorb S, manufactured by BASF.

Why has the U.S. taken so long to approve it?

American manufacturers haven't been able to use Bemotrizinol — not because of any safety concern abroad, but because the U.S. regulates sunscreen ingredients as over-the-counter drugs, which means a much longer and more expensive approval pathway than the one used in many other countries. This week, the FDA used a streamlined review process to finally add bemotrizinol to its approved ingredient list, allowing manufacturers to begin formulating with it later this summer. It's expected to show up first under a branded name before becoming more widely available to other manufacturers after an exclusivity period.

Why are people so excited about it?

The enthusiasm is real, and it's worth understanding why. Compared to some of the older chemical filters still used in U.S. sunscreens, Bemotrizinol has a much stronger track record: it stays mostly on the surface of the skin rather than being absorbed into the bloodstream, it holds up well under intense sun without breaking down, and dermatologists have pointed to it as gentle enough to eventually be recommended for infants. It also has a reputation for blending into formulas without leaving a heavy residue.

For an industry that's been working with the same short list of approved filters since the late 1990s, this is genuinely a big deal — and a sign that U.S. regulators are willing to modernize.

Is Bemotrizinol safe? Is there any real criticism of it?

Compared to most "new ingredient" debates, the criticism here is pretty thin — and most of it isn't really about consumer safety.

Compared to most "new ingredient" debates, the criticism here is pretty thin — and most of it isn't really about consumer safety. In fact, the FDA's review of Bemotrizinol turned out to be one of the more reassuring safety packages on file for any sunscreen filter.

Minimal skin absorption. The biggest standing question for any chemical sunscreen filter is systemic absorption: does it get into the bloodstream, and if so, does that matter? On this front, Bemotrizinol performs notably better than several filters already on U.S. shelves. Documents submitted to the FDA show that at concentrations up to 6%, Bemotrizinol is only minimally absorbed into the body, and the amount that does absorb stays below the level the FDA treats as a sign of meaningful systemic exposure. Compare that to FDA studies from 2019 and 2020, which found that a single application of six other approved chemical filters — Oxybenzone, Homosalate, Octisalate, Octocrylene, Avobenzone, and Octinoxate — were absorbed into the bloodstream above the FDA's threshold of concern. Oxybenzone was the most extreme case, showing up at over 500 times that threshold after repeated use. Bemotrizinol simply doesn't behave that way.

No evidence of cancer risk. As part of the approval process, Bemotrizinol was tested in a two-year animal study in which it was applied directly to the skin. The results showed no signs of abnormal or unregulated cell growth, suggesting it's unlikely to be carcinogenic when used as directed.

No reproductive harm. The FDA also reviewed a multi-generational reproductive study and found no harmful effects on the animals giving birth or on the survival and development of their offspring — another box checked in an unusually thorough review.

Not irritating. Submitted data included repeated-use and cumulative irritation patch tests, along with photo-allergy and phototoxicity testing. Across the board, the results indicated Bemotrizinol doesn't tend to irritate the skin or trigger allergic reactions, even with sun exposure.

Taken together, this is a genuinely strong safety package — arguably more robust than what's on file for several chemical filters that have been on U.S. shelves for decades. As advocacy groups like EWG have pointed out and as we analyse in our overview of toxic sunscreen ingredients to avoid, most non-mineral UV filters currently available do carry some open safety questions. 

Our honest takeaway: there's no major red flag here, and compared to other chemical UV filters, this is a clear step forward. But it's worth keeping perspective: Bemotrizinol is still a synthetic, absorption-based filter, and even "minimal absorption" is still absorption. Compared to mineral filters — and Zinc Oxide in particular, which works on top of the skin rather than being taken up by it — there will always be more open questions around long-term systemic exposure simply by virtue of how chemical filters function. As with any newly approved ingredient, it's reasonable to expect more real-world, long-term data to accumulate as products hit the market.

Does this change anything for mineral sunscreen?

Here's the thing: none of this changes what makes mineral sunscreen — the kind built around Zinc Oxide and Titanium Dioxide — a great choice. Mineral UV filters have been trusted for generations because they work through a simple, physical mechanism: they sit on top of the skin and reflect UV radiation away, rather than absorbing it and converting it to heat. That's part of why mineral formulas tend to be such a good fit for sensitive skin, young kids, and anyone who wants to keep their routine as simple and well-understood as possible.

What's the bigger picture here?

What's most interesting about this approval isn't really Bemotrizinol itself — it's what it represents. For 20+ years, the U.S. sunscreen aisle has looked pretty similar while other countries moved ahead with new filter technology. This approval shows that the regulatory door isn't permanently closed, and that there's real momentum (and consumer demand) behind better sun protection.

At Suntribe, we've always had a preference for natural over synthetic ingredients — it's a big part of why we build our formulas exclusively around the mineral UV filters Non-Nano Zinc Oxide and Titanium Dioxide in the first place. But that preference doesn't mean we close the door on new developments. We try to stay open-minded and let the research lead the way, and we're glad to see that at least in the case of Bemotrizinol the research has been more thorough than for any synthetic UV filter preceding it.

So while our commitment to 100% natural, clean, reef-friendly, exclusively mineral-based protection isn't changing, we're genuinely glad to see new, well-researched alternatives entering the market, even if they're synthetic. More tools, more research, and more competition all push sun care in the right direction — and we'll keep following the science as the landscape evolves.