Science
Mechanism of Action
This advanced dimethicone derivative functions by creating a hydrophobic layer that resides on the skin's surface. This barrier effectively seals in moisture, preventing water loss, and acts as a protective shield against external factors like chemicals, UV radiation, and pollution. Its substantial molecular size ensures it remains on the surface, imparting emollient properties for improved texture and functioning as a humectant to draw moisture.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
While a specific optimal pH range for SODIUM PG-PROPYL THIOSULFATE DIMETHICONE is not documented, dimethicone generally exhibits robust stability to heat and resistance to most chemical substances, though it can be compromised by strong acids. Related hydrolyzable dimethicone copolyols show limited hydrolysis resistance in neutral to slightly alkaline conditions, with rapid breakdown in acidic media.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded dimethicone and related polymers are safe for cosmetic application, provided formulations are non-irritating. Their large molecular weight precludes significant skin absorption. The FDA recognizes dimethicone as a safe and effective OTC skin protectant active ingredient at concentrations of 1-30%, with general cosmetic use concentrations extending up to 85%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This ingredient is a valuable asset for creating a protective, hydrating barrier on the skin, offering broad compatibility, low irritancy, and a strong safety profile.
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