Legacy SPF filters: what to replace in 2026 – Evigrade
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Legacy SPF filters: what to replace in 2026
Sunscreen filters fall into three generations. The modern ones cover the full spectrum and stay photostable. The older ones protect worse and bring extra risks. What to look for on the label is below.
Not all UV filters are the same. Between the octocrylene in a 2008 tube and Tinosorb A2B in a current Asian sunscreen formula sits twenty years of chemistry. We sort every filter approved in the EU and the US into three groups.
MODERN
These molecules were designed in the 1990s to 2010s specifically for broad UVA+UVB coverage and high photostability.
Tinosorb S (Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine) – 290–400 nm, photostable, stabilises other filters.
Tinosorb M (Methylene Bis-Benzotriazolyl Tetramethylbutylphenol) – an organic-mineral hybrid, micron-sized particles, UVA+UVB.
Tinosorb A2B (Tris-Biphenyl Triazine) – a newer filter, closes the short-wavelength UVB gap.
DHHB (Diethylamino Hydroxybenzoyl Hexyl Benzoate) – pure UVA, photostable, stabilises octinoxate if it is still in the formula.
Mexoryl XL (Drometrizole Trisiloxane) – L'Oréal patent, UVA+UVB, silicone structure, plays well with cosmetic bases.
Mexoryl SX (Ecamsule) – short-range UVA, often paired with Mexoryl XL.
Uvinul A Plus (Diethylamino Hydroxybenzoyl Hexyl Benzoate) – another trade name for DHHB.
Uvinul T 150 (Ethylhexyl Triazone) – the strongest UVB filter on the market per percent used.
Approved, but they protect worse than the modern filters or carry open safety questions.
Octinoxate (Ethylhexyl Methoxycinnamate)
UVB filter. Problems:
Endocrine activity in vivo (Klammer et al., 2007, Toxicology 238:192).
Photounstable: loses 40% in 35 minutes of UVB sun, so the formula needs a stabiliser (usually Tinosorb S or octocrylene).
Banned since 2021 in Hawaii and Palau.
Homosalate
Weak UVB filter. The SCCS capped it at 7.34% in the EU in 2021 over suspected hormonal activity. The US FDA allowed 15% until 2023, which is why European and American sunscreens differ here.
Octisalate (Ethylhexyl Salicylate)
Weak UVB filter, usually a "stabiliser" alongside others. On its own it gives little protection. No safety problem, but it takes up space in the formula where Uvinul T 150 would protect better.
Ensulizole (Phenylbenzimidazole Sulfonic Acid)
Water-soluble UVB filter, once used in light gels and fluids. Generates free radicals under the sun (Allen et al., 1996), now nearly gone from current formulas.
DISCOURAGED
Oxybenzone (Benzophenone-3)
Matta et al., 2019 (JAMA 321:2082) – systemic absorption under normal use exceeds the FDA 0.5 ng/mL threshold 188-fold by day four, which triggers a full safety reassessment under FDA rules.
Downs et al., 2016 – harm to coral reefs at 62 ppt in seawater.
Banned in Hawaii (SB 2571, 2018), Palau (2020), Key West (2019), and several Mexican reserves.
Downs et al., 2021 (Chemical Research in Toxicology 34:1046) – stored for a year or more, octocrylene degrades into benzophenone through a retro reaction. Benzophenone is classed 2B (possible carcinogen) by IARC.
The older the tube, the more benzophenone. A year-old octocrylene sunscreen is a benzophenone sunscreen.
Avobenzone (Butyl Methoxydibenzoylmethane)
Not dangerous on its own, but photounstable: loses 36% of its effect in an hour of UVA (Gaspar & Maia Campos, 2006). A good formula stabilises it with Tinosorb S or octocrylene; a bad one leaves it bare. Without a stabiliser avobenzone is pointless.
What to look for on the label
A good 2026 sunscreen carries at least two modern filters from the MODERN list. Working combinations in European formulas:
Tinosorb S + Uvinul T 150 + DHHB covers the full spectrum, stably.
Mexoryl XL + Mexoryl SX + Uvinul T 150, the L'Oréal classic.
Octocrylene first among the filters makes the production date critical, check freshness.
The American problem
The FDA lags badly: in the last 20 years it has approved no new organic filter in the US. That is why American sunscreens in 2026 lag European and Asian chemistry by a decade. In the EU, Japan, and Korea, Tinosorb S reached the mass market back in the 2000s, while FDA approval goes through the slow TEA process. If you buy sunscreen abroad, read the INCI more carefully. The difference between a right and a wrong formula can be a single line.