Science
Mechanism of Action
As a surfactant, PEG-20 Dioleate reduces surface tension, enabling immiscible liquids like oil and water to combine and form stable emulsions. Its humectant action involves forming hydrogen bonds with water molecules, thereby attracting and retaining moisture in the stratum corneum. This helps to reduce transepidermal water loss and supports the restoration of the skin's natural barrier, particularly beneficial for dry skin.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Poly(ethylene glycol) dioleate (average molecular weight approximately 914) exhibits solubility in toluene, ethanol, and acetone, and is dispersible in water. It is highly effective as an emulsifier, aiding in the integration of poorly water-soluble fatty substances or fragrance compounds into emulsions. Formulators should exercise caution, as it can enhance the dermal penetration of other ingredients, which may be a concern for compounds whose safety profile is contingent on minimal absorption. Strict avoidance on damaged skin is critical.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has determined that PEGs, including PEG-20 Dioleate, are safe for use in cosmetic products when formulated to be non-irritating. A primary safety consideration involves the potential presence of impurities such as ethylene oxide and 1,4-dioxane from the manufacturing process; therefore, adherence to robust Good Manufacturing Practices (GMPs) is essential for manufacturers to control these contaminants. Crucially, PEG-20 Dioleate and other PEGs should not be applied to compromised or severely damaged skin, as this can significantly increase dermal penetration and potentially lead to sensitization or systemic toxicity. The ingredient has received FDA approval as an indirect food additive, and general PEGs are recognized as GRAS by the FDA.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-20 Dioleate is a valuable ingredient for its dual role as a crucial emulsifier and mild humectant, provided it is sourced from reputable manufacturers adhering to GMPs and used exclusively on intact skin.
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