Science
Mechanism of Action
On the skin, PEG-4 Dicocoate primarily acts as an emollient, imparting a smooth and supple texture. As a surfactant, specifically an emulsifier, it stabilizes oil-in-water or water-in-oil emulsions by reducing interfacial tension, ensuring consistent product texture and uniform delivery of ingredients.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient maintains stability within a slightly acidic to neutral pH range, specifically between 4.6 and 7.4. Prolonged exposure to temperatures exceeding 50°C can induce oxidation, potentially leading to peroxide formation.
Conflicts
- Should not be used on damaged skin (e.g., severe burns) due to documented cases of systemic toxicity and contact dermatitis associated with PEG compounds.
Safety
Safety Profile
The CIR Expert Panel concluded that PEG diesters, including PEG-4 Dicocoate, are safe for cosmetic application when formulated to be non-irritating. A critical precaution is to avoid use on compromised or burned skin due to observed systemic toxicity and contact dermatitis. Manufacturers are advised to ensure impurities such as ethylene oxide and 1,4-dioxane are present only at trace levels, with 1,4-dioxane specifically limited to a maximum of 10 ppm. PEG-4, the base compound, is approved as an indirect food additive.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-4 Dicocoate is a valuable ingredient for its dual capacity to condition the skin and enhance formulation stability, with a favorable safety profile when used on intact skin under proper formulation conditions.
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