If you have ever squinted at the back of a Korean sunscreen and spotted "Tinosorb S" in the ingredient list, you have already met bemotrizinol. Same molecule, different name, and this summer the FDA finally welcomed it to the US sunscreen aisle.
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| Same filter, different names: Tinosorb S on Korean labels, bemotrizinol in US documents. |
The short version for anyone hoping their favorite Korean tube is about to show up at the corner drugstore: the door is open, but the tube has to be rebuilt to fit through it. The approval changes what US brands can put in a bottle. It does not make an imported Korean formula legal to sell as-is, and it does not erase the other rules that shape American sunscreen.
Here is what actually changed, why Korean brands have an edge in knowing this ingredient, and what to watch for on labels while the market catches up. A note on timing: most dates and figures below come from FDA documents and press coverage from June through September 2026, so check current availability before you shop.
What the FDA Actually Did
On June 10, 2026, the FDA published final order OTC000039 in the Federal Register, adding bemotrizinol to the over-the-counter sunscreen monograph at concentrations up to 6 percent. The order lists permitted dosage forms: oil, lotion, cream, gel, butter, paste, ointment, stick, and spray. Sprays must be made without a propellant or with the propellant fully isolated from the formula.
The request came from DSM Nutritional Products, which filed it on September 23, 2024, and the agency proposed the order in December 2025. Healio called it the first new active sunscreen ingredient permitted in the US since 1999, and the first chemical filter considered generally recognized as safe and effective. Press reports, including the JoongAng Daily and the Korea Herald, put the effective date at August 9, 2026.
Bemotrizinol is a broad-spectrum filter, which means it covers both UVA and UVB light. Healio notes that it is absorbed through the skin at low levels. A dermatologist writing on her practice's site adds that it holds up under sun exposure, unlike avobenzone, the workhorse UVA filter in many US drugstore sunscreens. That comparison is her claim without a cited study, so read it as an informed opinion.
Why Korean Labels Say Tinosorb S
One ingredient goes by several names. "Bemotrizinol" is the name used in FDA documents. "Tinosorb S" is the trade name BASF uses and the one most common on labels in Europe and across Asia. "PARSOL Shield" is dsm-firmenich's version. In Korean and Japanese ingredient lists, you are likely to see Tinosorb S or a long chemical name rather than the American term.
The Korean connection runs deep. A Korea Cosmetic Industry Institute official, quoted by the Korea Herald, said the filter's UVA protection and moisturizing feel suit the light textures K-suncare is known for. The Herald also reported that the no-white-cast, lotion-like finish many American shoppers love in Korean sunscreens comes from filter blends that include it.
That helps explain why the FDA's list has been such a sticking point. Per the Herald, the FDA list will grow to 17 active ingredients with this addition, while Korea permits 31. Korean formulators have a bigger toolbox to work from, and a sunscreen built from that toolbox does not map cleanly onto the American one.
Why Approval Does Not Mean Arrival
The sunscreen sold in a US store is regulated as an over-the-counter drug, not as a cosmetic. That brings requirements that skincare shoppers rarely think about. JoongAng Daily lists drug-grade manufacturing standards, a registered facility, annual fees, the Drug Facts label format, and listing in the National Drug Code Directory.
Then there are the companion filters. Korean sunscreens often pair bemotrizinol with other newer filters. The Herald names diethylamino hydroxybenzoyl hexyl benzoate and ethylhexyl triazone as examples that are not on the US list. JoongAng Daily points to bisoctrizole and drometrizole trisiloxane. Either way, a Korean sunscreen containing one of those cannot simply ship across the Pacific and land on an American shelf.
A manufacturer spokesperson told JoongAng Daily that one approved ingredient does not make Korean and US formulas interchangeable. DSM's Carl D'Ruiz made a similar point, saying companies cannot simply import sunscreens made for other regions. The practical result: US versions of Korean favorites will likely be new formulas that borrow the idea of the original and rebuild the details.
This is also why a US store's version of a Korean brand's sunscreen can differ from the Seoul original. Olive Young has pointed to this FDA change as a reason more of the original formulas could eventually arrive, according to JoongAng Daily.
Shoppers who have been buying Korean-formula sunscreens through global malls and direct orders are in a gray zone. JoongAng Daily reports that those shipments can be stopped by customs, while shelves in US stores can carry only products that meet FDA rules. The bemotrizinol approval, as far as the coverage reviewed here shows, does not change that split.
The ingredient also comes with a bit of a supply story. Per the Korea Herald, Englewood Lab, the American arm of the contract manufacturer Cosmecca Korea, showed a bemotrizinol-based suncare formula at a US beauty trade show in July, and an official there called BEMT a key next-generation ingredient in US suncare. Industry watchers quoted by the Herald see the advantage tilting toward the big Korean contract manufacturers that already have US drug-grade facilities.
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| Light, no-white-cast textures are a big reason Korean sunscreens travel so well in fans' routines. |
The Exclusivity Clock and a Date Dispute
Another catch: because DSM requested the ingredient, the order grants DSM and its licensees, assignees, and successors 18 months of exclusive marketing authority. During that period, other companies need to buy the ingredient from DSM or a licensee, which includes BASF, sublicensed to supply it as Tinosorb S.
Sources disagree on when the 18 months begin. The Korea Herald says it counts from the effective date, which would point to around February 2028 by its own arithmetic. JoongAng Daily reports that DSM says the clock starts when the first qualifying US product launches, which would push the end date later. JoongAng also notes that DSM says makers who buy its Parsol Shield do not need a separate license, while two law firms, Venable and Spencer Fane, read the exclusivity more strictly. The order text reviewed here did not settle the question, so treat any end date as an estimate.
There is one more pending piece. JoongAng Daily mentions a separate FDA proposal from September 2021 that could tighten conditions for all sunscreens, bemotrizinol ones included, if it is ever finalized. Nothing there is certain, but it is a reason not to treat the current rules as the last word.
Who Got There First
So far, the first US products are coming from companies with existing US sunscreen operations. The Drug Topics report on September 1 said Ultra Violette announced its Unblock Screen SPF 50 on August 31, with a second SPF 50 product slated for January 2027. Cosmetics Business reported on September 17 that Neutrogena launched two BEMT sunscreens, an Ultra Sheer Daily Face Sunscreen SPF 70 and a Clear Face Sunscreen SPF 60. Retailers and prices were not given in the coverage reviewed here.
Korean manufacturers are working on it, but on a longer clock. Cosmax told JoongAng Daily it has finished lab-scale stability tests and gathered SPF data on candidate formulas. Kolmar Korea, which has held FDA OTC manufacturing certification since 2013, expects bemotrizinol products to arrive in earnest in the second half of 2027, and about 80 percent of its sunscreen inquiries since the FDA announcement have concerned the ingredient. Development usually takes six months to a year, sometimes two, according to the same report.
Amorepacific said the approval should help it manage a global sun care lineup, since filter rules differ by market. The Herald adds that the US accounted for more than a fifth of Korea's cosmetics shipments in the first half of 2026, which gives Korean makers every reason to hurry.
Reading a Label in the Meantime
The label is where all of this becomes useful. A few checks cover most situations:
- On a US-sold sunscreen, look in the Drug Facts "Active ingredients" box for bemotrizinol. Brands may also mention Tinosorb S or PARSOL Shield in marketing copy.
- On an imported Korean tube, the full ingredient list may say Tinosorb S. A dermatologist cautions that a Tinosorb S product can be an international version that is not US-regulated, so check where it was made for and sold.
- When a US version of a Korean favorite appears, compare its filters with your old bottle instead of assuming a match.
The basics still apply in the meantime: broad-spectrum SPF 30 or higher, applied generously, with reapplication when you are outdoors. Skin type, climate, and what you wear over sunscreen all change how a formula feels, and anyone with persistently reactive skin should ask a dermatologist before swapping products.
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| Daily SPF stays the habit while the formulas catch up. |
For now, patience pays off. Neutrogena and Ultra Violette show what the new filter can do in American formulas, and Korean brands have years of experience with the molecule. Kolmar expects Korean-made bemotrizinol products to arrive in earnest in the second half of 2027, so the two stories may meet on the same shelf around then.
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