Science
Mechanism of Action
This ingredient operates by forming a hydrophobic, gas-permeable film directly on the skin's outermost layer. Its molecular structure is too large to penetrate the skin, ensuring it remains on the surface to create a protective barrier. This barrier actively prevents moisture evaporation, safeguards against environmental stressors, and imparts a silky-smooth feel, contributing to sustained skin hydration and conditioning.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
While Phenethyl Dimethicone is not typically a powder, the CIR Expert Panel has noted an exception for products that may be incidentally inhaled, such as those applied via airbrush devices, due to insufficient data regarding inhalation safety.
The Formula
Formulation
Stability
As a silicone, Phenethyl Dimethicone exhibits robust stability against heat and most chemical substances. However, it demonstrates incompatibility and can be adversely affected by strong acids.
Conflicts
- strong acids
Safety
Safety Profile
The CIR Expert Panel has affirmed Phenethyl Dimethicone, along with other substituted-Methicone polymers, as safe for use in cosmetic products when formulated to be non-irritating. The maximum reported concentration for dermal application is 85%. The FDA has also proposed classifying Dimethicone (a broader category including this ingredient) as Category 1, designating it as safe and effective for use as a skin protectant up to 30% in all age groups, including for diaper rash prevention and treatment.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Phenethyl Dimethicone is a highly valuable ingredient, offering proven emollient and skin conditioning benefits through its surface-level barrier formation, with a low risk of irritation and broad compatibility across all skin types.
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References
Sources