Triethoxycaprylylsilane
Caprylyl triethoxysilane; octyltriethoxysilane
Organosilane coupling agent used to hydrophobically coat TiO2 and ZnO in sunscreens and iron oxides in makeup; ethoxy groups hydrolyse on moisture contact forming silanol surface coating; coated particles improve dispersibility and reduce photocatalytic activity of inorganic UV filters; CIR reviewed as safe.
Function & Common Use
Adhesive / Binding Agent / Skin Conditioning Agent / Surface Coating Agent
Silicones
Mineral sunscreens, long-wear makeup, nail care, surface-treated pigments and UV filters
Synthetic
Concentration Limits
None
None
None
None
Format restriction: None
Baby restriction: No
Pregnancy: No
IFRA: No
Frequently Asked Questions
Is Triethoxycaprylylsilane safe to use in skincare?
Triethoxycaprylylsilane has a Low concern rating from The Clean Sheet. Organosilane coupling agent used to hydrophobically coat TiO2 and ZnO in sunscreens and iron oxides in makeup; ethoxy groups hydrolyse on moisture contact forming silanol surface coating; coated particles improve dispersibility and reduce photocatalytic activity of inorganic UV filters; CIR reviewed as safe.
Is Triethoxycaprylylsilane allowed in India?
Triethoxycaprylylsilane is currently classified as "Permitted" under Indian cosmetics regulations. The maximum permitted concentration is None.
What is Triethoxycaprylylsilane used for in cosmetics?
Triethoxycaprylylsilane functions as: Adhesive / Binding Agent / Skin Conditioning Agent / Surface Coating Agent. It is commonly found in: Mineral sunscreens, long-wear makeup, nail care, surface-treated pigments and UV filters.
Can Triethoxycaprylylsilane cause an allergic reaction?
Yes. Triethoxycaprylylsilane has an allergen flag (No). If you have sensitive skin or known fragrance/contact allergies, patch-test products containing this ingredient before full use.
Is Triethoxycaprylylsilane safe for babies?
Triethoxycaprylylsilane has baby/child restrictions: No. Avoid using products containing this ingredient on infants unless specifically formulated and labelled for baby use.
Regulatory Status
EU Annex: None
Identifiers
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