Alkyl silane film former
STEARYL TRIETHOXYSILANE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
Stearyl triethoxysilane is a long-chain silane used to coat pigments and create water-repellent films in makeup. CIR review of alkoxyl alkyl silanes supports cosmetic use within standard conditions.
Skin benefits
- Acts as a surface modifier and binder
- Creates a smooth, water-repellent finish on skin or pigment
- Improves spread and durability of makeup
- Used to coat pigments like titanium dioxide for stability
Known concerns
- Can release ethanol on hydrolysis during formulation
- Limited consumer awareness of alkyl silanes
- EWG flags potential contamination and impurity concerns
- Avoid inhalation when handling raw powders
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.