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Ingredient · INCI reference

Tris-Biphenyl Triazine

Tris-Biphenyl Triazine (Tinosorb A2B) is an organic broad-spectrum UV filter that absorbs across UVB and UVA wavelengths.

Tinosorb A2B CAS 31274-51-8

What it is

Tris-Biphenyl Triazine is a triazine-based organic UV filter that provides broad-spectrum protection spanning UVB and UVA1 and UVA2 ranges. It is a photostable filter often used to fill the gap between UVB-focused and UVA-focused absorbers in a sunscreen system. It is typically incorporated as a fine particulate dispersion in the water phase.

Spectrum coverage

UVA1 · UVA2 · UVB

UVA-I 340–400nm UVA-I (340–400nm) — covered UVA-II 320–340nm UVA-II (320–340nm) — covered UVB 290–320nm UVB (290–320nm) — covered

Regional approval · max %

JP — — Japan: No data KR ✓ 10% South Korea: Approved · Max 10% EU ✓ 10% Europe: Approved · Max 10% US — — United States: No data

Safety & warnings

Tris-Biphenyl Triazine is regarded as a well-tolerated UV filter with low sensitizing potential. As a large, photostable molecule it shows minimal skin penetration. It is not a recognized fragrance allergen.

Reef-toxic
No
Endocrine disruptor
No
Comedogenicity
0

Origin & sourcing

Tris-Biphenyl Triazine is a synthetic organic compound manufactured for use as a sunscreen UV filter.

Questions everyone asks

What kind of UV protection does Tinosorb A2B provide?

It is a broad-spectrum organic filter that absorbs UVB along with UVA1 and UVA2 wavelengths.

Is Tris-Biphenyl Triazine photostable?

Yes, it is a photostable filter, which helps it maintain consistent absorption during sun exposure.

Sources & references

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