Science
Mechanism of Action
This ingredient functions by reducing surface tension between immiscible substances, facilitating the formation of stable emulsions that keep oil and water blended. It effectively disperses ingredients that typically resist dissolution in a solvent. On the skin, it supports cleansing by allowing water to efficiently mix with oil and dirt for easier removal. As a polyethylene glycol derivative, it can enhance the penetration of other active ingredients into the skin. When formulated as a water-in-oil emulsion, it helps to minimize transepidermal water loss, thus boosting skin hydration and reinforcing the natural skin barrier without imparting a greasy feel.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyethylene glycols and their derivatives demonstrate a wide range of solubility and viscosity profiles, allowing for stable blending of oil and water phases.
Conflicts
- Damaged skin (do not apply)
Safety
Safety Profile
The CIR Expert Panel deems PEG Sorbitan/Sorbitol Fatty Acid Esters, including PEG-3 Sorbitan Oleate, safe for cosmetic use up to 25% concentration, with the critical proviso that they should not be applied to damaged skin. While related ingredients show low potential for irritation or sensitization, and PEGs are generally well-tolerated, some data indicates a moderate concern for allergies and immunotoxicity. Trace amounts of 1,4-dioxane, a processing byproduct, may be present but are manageable through purification. It is permissible for use in Europe if plant-derived components are used.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-3 Sorbitan Oleate is a valuable ingredient, primarily serving as a potent emulsifier and surfactant that also contributes to skin barrier support and hydration, provided it is not applied to damaged skin.
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References
Sources