Science
Mechanism of Action
This non-ionic surfactant operates primarily by reducing surface tension between immiscible liquids, effectively blending oil and water as an emulsifier. It further acts as a solubilizer for various ingredients, while its emollient properties improve skin feel. Within formulations, it enhances product texture, spreadability, and ensures uniform distribution of pigments and fragrances. In cleansing applications, it effectively dissolves impurities, facilitating a clean, residue-free rinse.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
An aqueous solution at 1% concentration exhibits a pH range of 5.0 to 7.0, indicating slight acidity to neutrality. It demonstrates moderate resistance to acidic conditions and is readily biodegradable. While generally stable, it is incompatible with strong oxidizing agents.
Conflicts
- strong oxidizing agents
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG-11 Castor Oil, among 130 PEGylated oil ingredients, safe for use in cosmetics when formulated to be non-irritating. Acknowledging potential impurities such as ethylene oxide and 1,4-dioxane, stringent purification processes are crucial. The maximum concentration of 50% is derived from safety assessments of related non-hydrogenated PEG castor oils (e.g., PEG-30 to PEG-40).
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-11 Castor Oil is a versatile non-ionic surfactant, emulsifier, and emollient, critical for creating stable formulations and enhancing product texture across various skincare and cosmetic applications.
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References
Sources