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Ingredient profile · Oil-soluble organic UVB filter

Ethylhexyl triazone in sunscreen: a strong UVB role in context

Ethylhexyl triazone is a photostable organic UVB filter often called Uvinul T 150, but it does not establish UVA protection or finished SPF alone.

Published
Last reviewed

At a glance

What it is
Oil-soluble organic UVB filter
Role
Cosmetic ingredient
What the evidence supports
EU regulation and spectroscopy literature support a UVB-filter role and photophysical stability, while the finished sunscreen test remains necessary for SPF and UVA claims.
Where you see it
Multi-filter organic sunscreens; Hybrid sunscreen formulas; High-SPF fluids, gels, creams and lotions
Last reviewed
8 Aug 2026

Quick answer

Ethylhexyl triazone—often called EHT or Uvinul T 150—is a UVB filter. It can support a high-protection system, but it cannot prove the finished SPF or answer the separate UVA question.

Strong UVB absorption is not the whole spectrum

Spectroscopy research describes ethylhexyl triazone as a UVB filter with rapid energy dissipation after absorption. Photophysical study That is ingredient-level evidence, not a test of a retail sunscreen film.

Look for the complementary UVA strategy

A label reader can ask whether the remaining filter system includes UVA roles, but cannot combine ingredient names into SPF or UVA-PF. Concentration, solubility, dispersion and film formation are missing.

The European limit is not global

The EU Annex VI entry lists ethylhexyl triazone up to 5%. EU Annex VI Indian permission and the authenticity of an Indian pack must be verified separately.

What we could not verify

The ingredient declaration cannot establish concentration, finished SPF, UVA-PF, photostability of the complete system or performance after sweat.

Bottom line

Read ethylhexyl triazone as one UVB part of the formula. Look to the complete filter system and finished-product tests for the consumer protection claim.

Evidence trail

Sources