Science
Mechanism of Action
This ingredient functions as a water-in-silicone emulsifier, facilitating the creation of stable mixtures between water and silicone oils. Its amphiphilic molecular structure also allows it to serve as a surfactant, effectively capturing dirt and fatty secretions for easy removal during cleansing. Beyond these properties, it delivers skin conditioning benefits, contributing to a softer and smoother complexion, and can adjust product viscosity to optimize texture. Furthermore, it aids in forming a protective layer on the skin for sustained hydration and efficiently disperses particulate ingredients like mineral UV filters and color pigments, thereby minimizing unwanted white cast.
Research
Clinical Evidence
Medium confidence1-3%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient is noted to be heat tolerant; however, exposure to temperatures exceeding 80°C should be avoided. No specific optimal pH range for stability has been identified.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed related silicone polymers, specifically 'Lauryl PEG-9 polydimethylsiloxyethyl dimethicone,' safe for use in cosmetic products at concentrations up to 6%. The panel concluded that due to their large molecular weights and typical low usage concentrations, significant skin absorption is unlikely. Oral toxicity studies in rats for PEG-9 polydimethylsiloxyethyl dimethicone demonstrated no adverse effects at doses greater than 5000 mg/kg.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-9 POLYDIMETHYLSILOXYETHYL DIMETHICONE is a valuable multi-functional ingredient, crucial for stabilizing emulsions, enhancing skin texture and hydration, and ensuring uniform pigment dispersion, all supported by a strong safety profile.
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