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Tris-Biphenyl Triazine

What Tris-Biphenyl Triazine is & what it does

A modern broad-spectrum filter (Tinosorb A2B) that is highly photostable and covers UVB and short UVA. It works as a fine particle to strengthen overall protection.

What is Tris-Biphenyl Triazine and what does it do in sunscreen?

Tris-Biphenyl Triazine is a modern broad-spectrum UV filter, sold under the trade name Tinosorb A2B. It is highly photostable and covers UVB plus short UVA, the part of the spectrum many older filters protect less well. In a sunscreen it works as a fine particle that strengthens overall protection, so it is usually paired with other filters to reach full broad-spectrum coverage.

Is Tris-Biphenyl Triazine a UV filter?

Yes. Tris-Biphenyl Triazine (Tinosorb A2B) is an approved UV filter, not a fragrance, preservative or texture ingredient. It absorbs UVB and short UVA light, and it is photostable, meaning it does not break down quickly in sunlight. That stability is one reason formulators add it to build reliable, long-lasting protection.

Is Tris-Biphenyl Triazine safe?

Tris-Biphenyl Triazine is regarded as a well-tolerated, low-irritation filter. It is a large, photostable molecule with very low skin penetration, and it is approved for sunscreens in the EU and other markets outside the US. It is a newer filter, so it is not yet cleared for US sunscreens, which reflects a regulatory backlog rather than a safety finding.

Does Tris-Biphenyl Triazine clog pores?

Generally no. It is a UV filter used in modest amounts, not a heavy oil or wax, and it is not one of the classic pore-clogging ingredients. As with any sunscreen, the overall richness of the formula matters more for breakouts than this single filter.

Is Tris-Biphenyl Triazine natural?

No, it is a modern synthetic UV filter made in a lab and not found in nature. Synthetic here just means it was engineered for photostable, broad-spectrum protection, not that it is unsafe. It is a chemical (organic) filter rather than a mineral one like zinc oxide.

Sunscreens with Tris-Biphenyl Triazine

We rate 150 sunscreens that contain it, showing the top 10 by overall score:

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