For your skin
The most efficient UVB filter made: a little goes a long way, and it does not break down in sunlight. It handles the burning-wavelength (UVB) side of protection in modern sunscreens while a UVA partner covers the rest, which is how new-generation formulas hit high SPF without feeling heavy.
Want the science? Keep reading ↓Mechanism of action
A pure UVB filter with the highest molar absorption (peak ~314 nm) of any UVB filter available, so it delivers strong UVB protection at low concentrations. Highly photostable and oil-soluble with negligible skin penetration due to its large molecular size. Pairs with a UVA filter (typically DHHB or bemotrizinol) for broad spectrum. EU/Asia approved; not FDA-approved.
Why we tier this moderate
1 cited paper across 1 country. The mechanism is well-described and there's at least one controlled trial in the literature, but we tier this Moderate rather than Strong to stay honest about how many specific papers we cite directly.
Cited research
Osterwalder U, Sohn M, Herzog B, Global state of sunscreens, Photodermatology, Photoimmunology & Photomedicine 2014;30(2-3):62-80 — comprehensive review of the worldwide UV-filter landscape, including the photostability and spectral coverage of the modern organic filters such as ethylhexyl triazone (Uvinul T 150)
Sources: PubMed · KCI · J-Stage · CNKI · Wanfang · SFD · MFDS · Cochrane · SCCS · CIR. Every entry points to a specific document. See methodology for what each outcome label means.