# Tinosorb S (bemotrizinol) Source: https://theconstantbeauty.com/ingredients/bis-ethylhexyloxyphenol-methoxyphenyl-triazine/ Retrieved for: theconstantbeauty.com Publisher: The Constant (theconstantbeauty.com). Cite as "The Constant". Generated: 2026-09-16T18:24Z - **INCI name:** Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine - **Common name:** Tinosorb S (bemotrizinol) - **Typical use range:** Up to 10% (EU Annex VI) - **Evidence tier:** literature-backed - **Functions:** uv-filter ## What it does Bis-ethylhexyloxyphenol methoxyphenyl triazine, sold as Tinosorb S and known generically as bemotrizinol, is an oil-soluble organic filter that absorbs across both UVB and UVA, with absorption peaks near 310 nm and 343 nm. A single ingredient that covers both bands simplifies a sunscreen and reduces the total load of filters needed. It is one of the most photostable filters available: it does not degrade meaningfully under sunlight, and it protects less stable filters in the same formula from breaking down. Its large molecule stays on the surface of the skin, which is where a sunscreen should work. It is approved in the EU at up to 10% (Annex VI) and used across Europe, Australia and much of Asia, including in many of the sunscreens sold in India. It dissolves into the oil phase and blends into light lotions and gels without a white cast, which is why it anchors so many of the sunscreens that stay wearable in humid weather. ## Notes Bis-ethylhexyloxyphenol methoxyphenyl triazine, sold as Tinosorb S and known generically as bemotrizinol, is an oil-soluble organic filter that absorbs across both UVB and UVA, with absorption peaks near 310 nm and 343 nm. A single ingredient that covers both bands simplifies a sunscreen and reduces the total load of filters needed. It is one of the most photostable filters available: it does not degrade meaningfully under sunlight, and it protects less stable filters in the same formula from breaking down. Its large molecule stays on the surface of the skin, which is where a sunscreen should work. It is approved in the EU at up to 10% (Annex VI) and used across Europe, Australia and much of Asia, including in many of the sunscreens sold in India. It dissolves into the oil phase and blends into light lotions and gels without a white cast, which is why it anchors so many of the sunscreens that stay wearable in humid weather. ## Used in - [Silk Veil SPF 50+ PA++++ Sunscreen](https://theconstantbeauty.com/product/silk-veil-spf-50-sunscreen/) ## References 1. CosIng, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (EU cosmetic ingredient database) 2. Regulation (EC) No 1223/2009 on cosmetic products, Annex VI (UV filters allowed in cosmetic products). 3. Osterwalder U, Sohn M, Herzog B. Global state of sunscreens. Photodermatol Photoimmunol Photomed. 2014;30(2–3):62–80.