Science
Mechanism of Action
As a cationic surfactant, Quaternium-91 interacts with the skin's surface, forming a thin, conditioning film. This interaction helps to smooth the skin's texture and maintain hydration. Additionally, its emulsifying capabilities are crucial for stabilizing complex skincare emulsions.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient maintains stability across neutral to slightly acidic pH ranges, typical for many cosmetic formulations. It is stable under standard storage conditions but requires protection from extreme temperatures.
Safety
Safety Profile
Generally considered safe for cosmetic use, Quaternium-91 carries a moderate risk of potential skin irritation or allergic reactions, including contact dermatitis, necessitating prior patch testing. Specific data regarding its topical safety during pregnancy and breastfeeding is currently unavailable, thus professional medical advice is recommended for individuals in these categories.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Quaternium-91 is a valuable conditioning agent that improves skin texture and feel while supporting emulsion stability, though robust clinical data on targeted skin benefits and comprehensive safety reviews are currently limited.
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References
Sources
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