Cited skincare — every flag names its source, no upsell.
Uv

Uvinul T 150

Ethylhexyl TriazoneSPF filter

One of the most efficient UVB filters by weight, with a light feel. Common in EU sunscreens, but not on the US list of allowed filters.

What it does

It’s one of the most efficient UVB filters by weight. It holds up in sunlight and feels light, so EU sunscreens use it for strong UVB protection without the thick feel of zinc-heavy formulas.

The EU’s ingredient database lists it as a UV filter (filters UV rays) and a light stabilizer (protects the product from light).European Commission, CosIng (© European Union, CC BY 4.0) · uses put in plain words by Drop ↗

The evidence, graded

expert consensusSunscreen is the final leave-on step of the morning. The SPF number on the bottle comes from testing that product on its own, spread evenly at 2 mg/cm², with nothing layered over it — so once something goes on top, the label no longer describes what is on the skin. No study Drop has read measured how much protection a layer on top costs.Petersen 2014 · Photodermatology, Photoimmunology & Photomedicine ↗
expert consensusReapply sunscreen at least every two hours during sun exposure, and immediately after swimming, sweating, or towel-drying. One of the reviews behind this advises going sooner: Petersen and Wulf suggest a second coat within the first hour, because the first coat is almost always thinner than the amount the SPF number was measured on.Petersen 2014 · Photodermatology, Photoimmunology & Photomedicine ↗

Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.

Also known as

octyl triazone

Pairs worth knowing

Bemotrizinol · works together ↗Tinosorb M · works together ↗Uvinul A Plus · works together ↗

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