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Moumoujus

TRIS-BIPHENYL TRIAZINE.

Essential CAS 31274-51-8 / LIGHT STABILIZER, UV ABSORBER, UV FILTER

Tris-Biphenyl Triazine, also known as Tinosorb A2B, is an advanced broad-spectrum UV filter renowned for its exceptional photostability and dual-action protection against both UVB and UVA radiation. It functions as both a chemical absorber and a physical reflector, significantly contributing to high SPF and water resistance in sophisticated skincare formulations.

Summary

UV Filter

Science

Mechanism of Action

This innovative UV filter employs a hybrid mechanism to safeguard the skin from solar radiation. It primarily absorbs harmful UV wavelengths across the entire spectrum, including UVB (280-320 nm), UVA2 (320-340 nm), and exhibits a boosting effect in UVA1 (340-400 nm), converting this energy into less damaging heat. Concurrently, as a particulate filter, it physically reflects and scatters UV radiation from the skin's surface. This comprehensive approach effectively prevents UV-induced DNA damage, premature aging, and hyperpigmentation, with its inherent photostability ensuring sustained protective efficacy.

Research

Clinical Evidence

High confidence
Effective range 1–3%
Optimal

N/A

Key findings

  1. 01 Demonstrated the ability to provide 2 SPF units and 1 UVA-PF unit. Notably, its photostability ensures these protection levels remain unchanged after 2 hours of simulated solar irradiation.
  2. 02 Successfully incorporated into high-performance sunscreens, such as an SPF 50+ formulation designed for extreme sports.
  3. 03 When used in an oil-in-water (O/W) emulsion, it significantly enhanced both SPF and UVA protection, contributing to superior water resistance compared to other filters like PBSA.

Transparency

Dusting Analysis

Commonly dusted

Formulations containing higher concentrations of Tris-Biphenyl Triazine, or those with suboptimal dispersion, may manifest as a visible residue or white cast on the skin, which can be particularly noticeable on deeper skin tones.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Tris-Biphenyl Triazine is highly photostable and maintains its integrity across a broad pH range, making it suitable for diverse formulations, including those containing alpha hydroxy acids or self-tanning agents. Being practically insoluble in water and only slightly soluble in cosmetic oils, it is typically incorporated as a dispersion, often utilizing nano-sized particles.

Conflicts

  • Aerosol spray applications are strictly prohibited due to documented concerns regarding inhalation exposure.
  • High concentrations or suboptimal formulation techniques can lead to a visible white cast, especially on deeper skin tones.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
10%
Sensitization risk Low

Approved for use in Europe by the SCCS at a maximum concentration of 10%, this ingredient is generally regarded as safe for topical application and is a non-skin irritant. Regulatory approval in the US and Canada is currently pending. However, its inclusion in aerosol sprays is explicitly forbidden due to inhalation safety concerns.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Verdict

Essential

Tris-Biphenyl Triazine is an essential, high-performing UV filter offering broad-spectrum, photostable protection, positioning it as a cornerstone for developing superior sun care formulations.

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