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Moumoujus

TRIMETHOXYCAPRYLYLSILANE.

Valuable CAS 3069-40-7 / BINDING, SMOOTHING

Trimethoxycaprylylsilane is a versatile silicone-based compound primarily utilized as a surface modifier for pigments in cosmetic formulations. It improves product wear and acts as a binding and smoothing agent, enhancing overall texture, consistency, and adhesion.

Summary

binding smoothing surface modifier dispersion enhancer oil absorption reducer wear enhancer

Science

Mechanism of Action

This ingredient functions by effectively coating pigment particles, which significantly improves their uniform dispersion within oil and silicone phases. This specialized coating also reduces the pigment's oil absorption, contributing to enhanced product longevity and wear on the skin. Additionally, its inherent binding and smoothing properties refine the product's texture, facilitating superior spreadability and adhesion upon application.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

As a hydrophobic compound, Trimethoxycaprylylsilane exhibits oil solubility. Its structural analogues indicate that the Si-O bond can be susceptible to hydrolysis in the presence of moisture, suggesting potential reactivity in water-rich environments.

Safety

Safety Profile

CIR Status
Safe as used
Max tested
0.77%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that Trimethoxycaprylylsilane is safe for use in cosmetics under typical application concentrations. The Scientific Committee on Consumer Safety (SCCS) supports its safe use at concentrations up to 25% as a coating for nano Titanium Dioxide in dermally-applied products, provided there is no inhalation exposure. While high concentrations (100%) caused irritation in rabbit skin studies, at cosmetic-relevant levels, it is not considered toxic or dermally damaging. This ingredient is also found in some OTC drugs, and complies with FDA regulations for marketed cosmetics.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Valuable

Trimethoxycaprylylsilane is a valuable cosmetic ingredient for improving product texture, enhancing pigment dispersion, and extending wear, with a robust safety profile under recommended use.

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