Science
Mechanism of Action
Triethoxysilylethyl Polydimethylsiloxyethyl Dimethicone functions by forming a smooth, flexible, and water-repellent film upon application to the skin or hair. This film acts as an occlusive barrier, effectively preventing transepidermal water loss and promoting skin hydration. Structurally, it merges the smooth, conditioning attributes characteristic of silicones with the robust surface-bonding and film-forming capabilities of silanes. This dual functionality not only improves water resistance and adhesion within cosmetic formulations but also ensures uniform dispersion of insoluble powders, such as mineral pigments, thereby enhancing spreadability for a seamless application.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
This ingredient is utilized to treat insoluble powders like pigments, facilitating their easy and uniform dispersion. Its primary function is to prevent issues like dusting by ensuring powders are well-integrated and applied smoothly, rather than being a component prone to dusting itself.
The Formula
Formulation
Stability
Its inherently water-repellent nature enhances product stability and durability. When incorporated into formulations, particularly with pigments or other components, it forms a stable composition.
Synergies
- silicone oils (improves spreadability and dispersion)
Safety
Safety Profile
The CIR Expert Panel has deemed dimethicone and related substituted-methicone polymers, including Triethoxysilylethyl Polydimethylsiloxyethyl Dimethicone, safe for use in cosmetics under current practices and concentrations, provided formulations are non-irritating. While a specific maximum concentration for this exact ingredient is not specified, related dimethicone polymers have been reported safe for dermal contact at concentrations up to 85%. There is a caveat regarding potential inhalation safety for products applied via airbrush devices due to insufficient data. EWG Skin Deep identifies high contamination concerns for the related 'TRIETHOXYSILYLETHYL POLYDIMETHYLSILOXYETHYL HEXYL DIMETHICONE', indicating a higher score if toxic impurities are present, but this concern is specific to the hexyl variant.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Triethoxysilylethyl Polydimethylsiloxyethyl Dimethicone is a valuable silicone polymer that significantly enhances product texture, application, and skin barrier function through its conditioning, film-forming, and water-repellent properties.
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