If you've ever watched a Korean or European beauty enthusiast rave about a sunscreen that feels like water, leaves no cast, and lasts all day — and then gone looking for it in the US only to find it's not available — you've encountered one of the more unusual gaps in American consumer products. US sunscreens are effective and safe, but they lag behind much of the world in terms of the range of UV filters available. That gap has a specific cause: a regulatory pathway designed for pharmaceuticals that has made it extraordinarily difficult for the FDA to approve new sunscreen ingredients. This article explains the history, the current situation, and what it actually means for your sun protection.
Why Sunscreen Is a Drug in the US (and a Cosmetic Everywhere Else)
In the United States, sunscreens are classified as over-the-counter (OTC) drugs by the FDA — not cosmetics. This classification dates back to the Federal Food, Drug, and Cosmetic Act of 1938, and it means every ingredient in a sunscreen must be individually evaluated and approved by the FDA as a drug ingredient before it can be used. In Europe, sunscreens are regulated as cosmetics, which means ingredients go through a different (and generally faster) review process.
The OTC drug framework was largely built around categories like antacids and pain relievers. For those products, the system works reasonably well. For sunscreens — where the cosmetic experience (how it feels, whether it leaves a cast, how elegantly it blends) is deeply tied to whether people actually use the product daily — the pharmaceutical approval model has created a slow-moving bottleneck.
Because sunscreens are OTC drugs in the US, every active ingredient needs its own FDA approval — a process that has taken decades and still isn't complete for filters submitted in the 1990s.
The Backlog: How 8 Filters Got Stuck in Limbo
Between 1997 and 2002, eight sunscreen active ingredients — including Tinosorb S (bis-ethylhexyloxyphenol methoxyphenyl triazine), Tinosorb M (methylene bis-benzotriazolyl tetramethylbutylphenol), Uvinul A Plus (diethylamino hydroxybenzoyl hexyl benzoate), Uvinul T 150 (ethylhexyl triazone), Mexoryl XL (drometrizole trisiloxane), Mexoryl SX (terephthalylidene dicamphor sulfonic acid), Bemotrizinol, and others — were submitted to the FDA for approval under what was called the Time and Extent Application (TEA) process. These filters were already approved and widely used in Europe, Canada, Japan, and Australia.
The TEA process was supposed to be a streamlined route for ingredients with an established international safety record. Instead, the FDA issued requests for additional data — absorption studies, systemic exposure studies, carcinogenicity data — that applicants were not required to provide under the original rules. The filters were never formally rejected, but they were never approved either. They've been stuck in regulatory limbo for over 25 years.
- Tinosorb S and Tinosorb M: broad-spectrum UVA/UVB filters widely used in European and Canadian sunscreens; considered among the most stable and photostable filters available.
- Bemotrizinol (Tinosorb S): exceptionally broad UVA coverage; popular in Korean sunscreens imported to the US.
- Mexoryl SX: used in La Roche-Posay products sold in Europe and Canada; some La Roche-Posay products sold in the US are reformulated without it.
- Uvinul A Plus: excellent UVA coverage with good photostability.
- Uvinul T 150: strong UVB filter used as a booster in many European formulas.
The Sunscreen Innovation Act and Why It Didn't Fully Fix Things
In 2014, Congress passed the Sunscreen Innovation Act (SIA), explicitly designed to break the logjam. The SIA required the FDA to respond to pending TEA applications within specific timeframes and set up a more defined review process. It was hailed as the solution that would finally bring modern filters to the American market.
The results have been mixed. The FDA did respond to the pending applications — but the responses largely requested still more data, particularly on systemic absorption. A 2019 FDA study showed that several chemical sunscreen ingredients (including avobenzone, oxybenzone, octocrylene, and ecamsule) were absorbed into the bloodstream at levels above the FDA's threshold for requiring further safety testing. The FDA was careful to note this finding did not mean the filters were unsafe — but it set a new bar for data that manufacturers would need to clear before new ingredients could be approved.
Systemic absorption above a threshold triggers more required data — it does not mean an ingredient is harmful. The FDA has been clear on this distinction, even if media coverage sometimes hasn't been.
As of 2026, no new sunscreen active ingredients have been approved for use in the US since the 1990s. The eight TEA-submitted filters remain unapproved. Industry groups continue to push for resolution, but the process moves slowly.
What Americans Are Actually Missing
The filters the US lacks are mostly notable for two things: superior cosmetic elegance and better long-wave UVA coverage. European and Korean sunscreens that use Tinosorb S, Tinosorb M, or Bemotrizinol can often achieve broad-spectrum protection with lower concentrations of active ingredients — which typically means lighter textures, less white cast, and more photostable formulas that don't degrade as quickly in sunlight.
Long-wave UVA (sometimes called UVA-I) is the part of the UV spectrum most associated with photoaging and may play a role in skin cancer. The US critical wavelength standard does require some UVA coverage, but it doesn't specifically test for long-wave UVA-I coverage the way Europe's PPD/PA system or in-vitro tests do. Zinc oxide at sufficient concentrations is the best available FDA-approved option for long-wave UVA coverage.
- Cosmetic elegance: thinner, more comfortable textures are genuinely easier to achieve with the broader European filter toolkit.
- Photostability: some US chemical filters (especially avobenzone) degrade in UV light fairly quickly; European formulas often pair them with photostabilizers that aren't available here.
- UVA-I coverage: broader and more comprehensive in formulas using Tinosorb or Bemotrizinol.
- Tint compatibility: lighter filter loads allow for more elegant tinted formulas.
Is the US Filter Gap Actually a Problem for Your Skin?
Here is the honest answer: US sunscreens, used consistently and in adequate amounts, provide effective protection against the UV damage that causes sunburn, photoaging, and skin cancer risk. The clinical evidence for outcomes like melanoma prevention and reduced photoaging comes largely from studies done with products using the same core filters available in the US today — zinc oxide, titanium dioxide, avobenzone.
The practical downside of the gap is largely about compliance. If sunscreen feels heavy, greasy, or leaves a white cast, people use less of it — or skip it. The cosmetically superior textures possible with modern European filters might increase the actual real-world protection people get simply by making sunscreen more wearable. That's a legitimate concern, but it's different from saying that US-approved sunscreens are dangerous or inadequate.
US sunscreens are safe and effective. The gap from Europe is about cosmetic elegance and some UVA coverage nuances — not about fundamental safety or protection from skin cancer risk.
What You Can Do With the Current US Options
The most important thing is to use sunscreen consistently. After that: look for zinc oxide as the lead active ingredient if you want the broadest UVA coverage in an FDA-approved formula. If cosmetic feel is your primary barrier to compliance, explore hybrid formulas and chemical sunscreens that tend to have lighter textures. You can legally purchase and import sunscreens from Canada, the UK, or Korea for personal use — though regulatory status varies and products aren't guaranteed to meet US labeling standards.
Rosee's ingredient checker lets you scan any sunscreen barcode or search by product name to see exactly what active ingredients are in your SPF, which UV ranges they cover, and any relevant formulation notes — so you can make an informed choice no matter which formula you use.
Frequently asked questions
Why doesn't the US have Tinosorb sunscreens?
Tinosorb S and Tinosorb M were submitted to the FDA in the late 1990s under the Time and Extent Application process, which was supposed to fast-track ingredients with established international safety records. The FDA kept requesting additional data — particularly on systemic absorption — and the filters have remained stuck in regulatory limbo for over 25 years with no formal approval or rejection.
Are European sunscreens better than American sunscreens?
They often offer better cosmetic elegance and can provide broader long-wave UVA coverage, thanks to a wider toolkit of approved filters. But American sunscreens are safe and effective at preventing sunburn and UV damage when used as directed. The gap is real but is primarily about texture and UVA-I depth rather than fundamental safety or efficacy.
Is it legal to buy European or Korean sunscreens in the US?
Yes — importing sunscreens for personal use is generally legal. The nuance is that FDA-unapproved active ingredients mean these products technically don't meet OTC drug requirements for sale in the US, but personal importation is a different matter. Be aware that products may not carry English-language safety labeling and SPF claims may be tested under different standards.
What was the Sunscreen Innovation Act?
The Sunscreen Innovation Act (SIA) was passed by Congress in 2014 to speed up the FDA's review of new sunscreen ingredients that had been pending for years. It set mandatory response timelines for the FDA. While the FDA did respond to pending applications, those responses largely requested more data rather than granting approvals, and no new active ingredients have been approved under the SIA as of 2026.
Which US sunscreen has the best UVA protection?
Zinc oxide is the FDA-approved filter with the broadest UVA coverage, including long-wave UVA-I. Look for sunscreens with zinc oxide at 15-20% or higher as the primary or sole active ingredient for the best available UVA protection under US regulations. Avobenzone (stabilized) is the best chemical option for UVA in the US.