Science
Mechanism of Action
This ingredient functions by utilizing its positively charged quaternary ammonium groups to electrostatically adhere to negatively charged surfaces, such as the skin. On the skin, it establishes a breathable, emollient layer, which not only improves the cosmetic's spreadability but also leaves behind a notably soft, non-greasy tactile finish.
Research
Clinical Evidence
Low confidence1%
Key findings
- 01 An optimal concentration of 1% w/w of a silicone quaternary microemulsion (a broader class including Silicone Quaternium-3) in shampoo significantly improved conditioning performance, demonstrating superior smoothness and softness based on evaluations. Manufacturers typically recommend use levels between 2% and 8% w/w for similar ingredients.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
SILICONE QUATERNIUM-3 exhibits good stability. Its solubility can vary from water-insoluble to water-soluble, influenced by the degree of siloxane polymerization and the number of ethylene oxide units. Formulations incorporating silicone quaternary microemulsions have shown stability within an average pH range of 6.59-7.17.
Safety
Safety Profile
No specific CIR safety assessment for SILICONE QUATERNIUM-3 was found. However, the CIR Expert Panel has deemed related silicone polymers, such as Dimethicone and Amodimethicone, safe for cosmetic use at concentrations up to 15%, citing their large molecular weight as a factor limiting significant skin absorption. EWG Skin Deep rates SILICONE QUATERNIUM-3 with 'LOW' concerns for allergies, immunotoxicity, and developmental/reproductive toxicity. No specific SCCS opinion or FDA status was available.
Your Skin
Skin Compatibility
Our Assessment
Verdict
SILICONE QUATERNIUM-3 is a valuable ingredient for enhancing product feel and providing emollient benefits on skin, supported by a low risk of irritation and comedogenicity, despite limited skin-specific clinical efficacy data.
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