The Index · Organic UVB filter

Ethylhexyl Triazone

Oil-soluble UVB filter (Uvinul T 150); EU Annex VI max 5%. High extinction, photostable.

StrongEstablished authorised UVB filter outside the US monograph.

Reviewed byNot yet reviewed

Last updated18 Sept 2026

Ethylhexyl triazone (Uvinul T 150) is a triazine UVB filter with high molar extinction and good photostability, widely used in EU and Asian chemical sunscreens[1].

What it does

Delivers efficient UVB absorbance at relatively low use levels, often combined with UVA filters such as diethylamino Hydroxybenzoyl Hexyl Benzoate.

The evidence

Authorised in EU Annex VI at up to 5%[1]. Not on the US OTC sunscreen monograph.

How to use it

A label clue that a sunscreen is using modern EU filter architecture rather than older US-only stacks.

Evidence by claim

Graded separately; the entry grade is the best-supported claim

Efficient photostable UVB absorber[1]

Strong

EU-authorised UV filter up to 5%[1]

Strong

Safety & limits

Source and region, always

5 % · sunscreen — Annex VI authorised UV filter; maximum 5%.[1] EU UK

sunscreen — Not on the US OTC sunscreen monograph. US

Sources · 1

Numbered as cited in the text

[1]European Commission. Regulation (EC) No 1223/2009 Annex VI — UV filters allowed in cosmetic products. EU Cosmetics Regulation (2009)regulator

Revision history

18 Sept 2026Drafted by botTheSkindex Desk