Science
Mechanism of Action
As a water-insoluble silicone, Silicone Quaternium-20 possesses a low surface tension, enabling superior spreading capabilities on the skin. It establishes vapor-permeable, protective films on the skin's surface, contributing to skin health and can also be utilized in advanced coacervate delivery systems.
Research
Clinical Evidence
Medium confidence0.5%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Optimal pH for formulations containing Silicone Quaternium-20 generally ranges from 4.5 to 6.5. Specifically, conditioner formulations benefit from a pH of 4.5-5.5, while shampoos are best formulated at pH 6.0-6.5. Citric acid is a common pH adjuster. It generally exhibits good compatibility with anionic surfactants.
Synergies
- Anionic Surfactants (with careful formulation)
Conflicts
- Sodium Laureth Sulfate (SLES) if not carefully formulated for complex formation, as direct incompatibility can lead to phase separation.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has determined that dimethicone, methicone, and substituted-methicone polymers, including silicone quaternium compounds, are safe for use in cosmetic products. This safety is attributed to their large molecular weights, which minimize skin absorption, and their typical use at low concentrations. Silicone Quaternium-20 is specifically noted as non-irritating to the eyes and very mild to the skin. Silicones, in general, are recognized for having no comedogenic effect.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Silicone Quaternium-20 is a valuable conditioning agent that significantly improves hair and skin aesthetics and manageability, demonstrating a strong safety profile across all skin types.
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