Science
Mechanism of Action
This ingredient, synthesized from coconut oil and ethanolamine, acts as an emulsifying agent to create stable mixtures of oil and water, and as a surfactant to lower surface tension. The process of pegylation, involving polyethylene glycol chains, enhances its water solubility and strengthens its surfactant properties. While its non-ethoxylated counterpart, Cocamide MEA, also functions as a thickener and foaming agent, PEG-20 Cocamide MEA's main contribution is to formulation stability and texture.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PEG-20 Cocamide MEA demonstrates stability across acidic, neutral, and moderately alkaline pH environments. It is also compatible with hard water and various types of surfactants, making it versatile for diverse formulations.
Synergies
- Hard water compatibility
- Compatibility with various surfactants
Conflicts
- N-nitroso compounds (due to potential for carcinogen formation)
- High levels of primary amine impurities
- Presence of 1,4-dioxane impurity
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG-20 Cocamide MEA safe for use in cosmetics under current practices, provided the final product is non-irritating. Formulators must ensure the ingredient is not used in products where N-nitroso compounds can form, and should minimize primary amine impurities and the presence of 1,4-dioxane. A specific maximum concentration for PEG-20 Cocamide MEA was not defined, though its parent compound, Cocamide MEA, is considered safe up to 50% in rinse-off and 10% in leave-on products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-20 Cocamide MEA is a valuable formulation component for enhancing stability and texture, provided strict adherence to safety guidelines regarding impurities and N-nitroso compound formation.
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