Science
Mechanism of Action
As a non-ionic emulsifier and surfactant, PEG-4 Dioleate enables the formation of stable, homogenous mixtures of oil and water, ensuring product uniformity. Its dispersant and solubilizing properties further aid in integrating diverse components within a formula. Functioning as a polyethylene glycol derivative, it acts as both an emollient, creating a protective film to reduce moisture evaporation, and a humectant, attracting and retaining water in the skin via hydrogen bonding, thereby supporting skin hydration and barrier function.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A 1% solution of PEG-4 Dioleate typically exhibits a pH range of 5.5 to 7.0. The ingredient is susceptible to hydrolysis and demonstrates reduced stability under hot alkaline conditions.
Conflicts
- hot alkaline conditions
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that PEG diesters, including PEG-4 Dioleate, are safe for use in cosmetics when formulated to prevent irritation. Polyethylene glycols (PEGs) generally hold a long-standing safety record and are recognized as Generally Recognized As Safe (GRAS) by the FDA. Concerns regarding manufacturing impurities like ethylene oxide and 1,4-dioxane have been largely mitigated by reputable suppliers, ensuring a purified finished ingredient.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-4 Dioleate is a valuable multifunctional ingredient, offering robust formulation stability through its emulsifying and solubilizing properties, alongside beneficial humectant and emollient effects for skin hydration across various skin types.
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References
Sources