Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (BEMT)
Commonly known as: BEMT, Bemotrizinol, Parsol Shield, Anisotriazine, Tinosorb S, Escalol S, Uvinul T 150.
I.N.C.I. list name: Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine.
Extraction process: Friedel-Crafts acylation catalyzed by a Lewis acid, followed by alkylation with a halogenated alkane catalyzed by a base (patented manufacturing process).
Source: Synthetic.
Botanical name: /
Family: /
Extracted part of the plant: /
Origin, provenance: Switzerland.
Chemical properties: Chemical formula: C38H49N3O5; Absorption peaks at 310 nm and 345 nm; Molecular weight: 627.8 g/mol; Soluble in oils and alcohol; Insoluble in water; Robust photostability; Density: 1.17 g/cm3.
Properties: Emulsion, true lipid solution, suspension.
Required dosage in cosmetic products: Maximum concentration permitted by European legislation: 10%.
Function: Hair-conditioning agent, skin-conditioning agent, stabilizing agent, UV absorber, UV filter.
Specificities: Photoprotective agent.
Benefits: All skin and hair types.
Details
Properties
Stabilizing agent: Protect the formula of topical products from UV-induced degradation.
Photoprotector: Provide comprehensive, long-lasting protection for skin and hair against adverse effects of UVA and UVB, helping prevent sunburn, premature skin aging, and skin cancer.
Usage
Facial care (sunscreen creams/sprays/sticks; SPF day moisturizers; sunscreen lip balms) ;
Body care (sunscreen creams/lotions, dry oil sunscreens, sunscreen sprays/mists);
Hair care (hair sun-protection oils, conditioners) ;
Pigmented formulas (BB creams).
Storage conditions
Store at a temperature between 2 and 8 °C in a cool, dry place, away from heat, light, and moisture.
Contraindications, precautions for use
As a recent UV filter on the market, bis-ethylhexyloxyphenol methoxyphenyl triazine has limited documentation on its long-term adverse effects.
However, current data indicate a good tolerability profile. Although rare cases of skin irritation have been reported, it is considered safe and suitable for all skin types, including the most sensitive.
Additional studies in vitro have shown that it does not exhibit intrinsic estrogenic or androgenic activity, unlike some older sunscreen filters.
