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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 catalysed by a Lewis acid, followed by alkylation with a halogenated alkane under alkali catalysis (patented manufacturing process).
Source: Synthetic.
Botanical name: /
Family: /
Part of the plant extracted: /
Provenance, origin: Switzerland.
Chemical characteristics: Chemical formula: C38H49N3O5; absorption peaks at 310 and 345 nm; molecular weight: 627.8 g/mol; soluble in lipids and alcohol; insoluble in water; good photostability profile; density: 1.17 g/cm3.
Characteristics: Emulsion, true oily solution, and suspension.
Dosage required in cosmetic products: Maximum concentration authorised under European legislation: 10%.
Function: Hair conditioner, skin conditioning agent, stabilising agent, UV absorber, and UV filter.
Properties: Photoprotective agent.
Benefits: All skin and hair types.

Details

Properties

  • Stabilising agent: Protect the formula of cosmetics from the effects of UV radiation.

  • Photoprotector: Provides comprehensive long-lasting protection for skin and hair against the harmful effects of UVA and UVB, helping prevent sunburn, premature skin ageing, and skin cancer.

Usage

  • Facial care (sun creams/sprays/sticks, day moisturisers with SPF, sun lip balms)

  • Body care (sun protection creams/lotions, dry sun protection oils, sun protection sprays/mists);

  • Hair care (sun-protection hair oils, conditioners) ;

  • Make-up (BB creams).

Storage instructions

Store at a temperature between 2 °C and 8 °C in a cool, dry place, protected from heat, light, and moisture.

Contraindications and 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, the data available to date 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 sensitive skin.

Moreover, studies in vitro have shown that it does not exhibit intrinsic oestrogenic or androgenic activity, unlike some older sun filters.

Find out more

Considered one of the most effective UV filters on the market, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine is a next-generation chemical UV filter. It is recognised for its ability to absorb a wide spectrum of UV rays from 280 to 400 nm. Used at low concentration in skin and hair care, it helps prevent sun-induced damage. It is photostable and can enhance the stability of other UV filters that are more sensitive to light.