Diethylhexyl Butamido Triazone

Diethylhexyl butamido triazone (iscotrizinol, Uvasorb HEB) is an oil-soluble triazine UVB filter used in modern European sunscreen architectures[1].

What it does

Adds photostable UVB absorbance, often stacked with UVA filters such as diethylamino Hydroxybenzoyl Hexyl BenzoateDiethylamino Hydroxybenzoyl Hexyl BenzoateStrongDiethylamino Hydroxybenzoyl Hexyl Benzoate · Organic UVA filter (DHHB)Photostable UVA1 filter (Uvinul A Plus); EU Annex VI max 10%. Not on the US OTC sunscreen monograph.Open in the Index → and broadband filters such as methylene Bis-Benzotriazolyl TetramethylbutylphenolMethylene Bis-Benzotriazolyl TetramethylbutylphenolStrongMethylene Bis-Benzotriazolyl Tetramethylbutylphenol · Organic broadband UV filter (particulate)Tinosorb M / bisoctrizole — hybrid organic filter that also scatters; EU Annex VI max 10%. Distinct from bemotrizinol (Tinosorb S).Open in the Index →.

The evidence

EU Annex VI authorises it up to 10%[1]. Not a US OTC monograph filter.

How to use it

Another signal of EU-style filter stacks on SPF50 products sold outside the US drugstore aisle.