Science
Mechanism of Action
This ingredient reduces surface tension between oil and water, enabling the formation of stable emulsions. As an emulsifier, it ensures homogeneous product consistency; as a surfactant, it aids in mixing water with oils and dirt for effective cleansing. Its structure as a PEGylated sorbitan ester also contributes to improving the skin's hydration balance.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Ethoxylation enhances its solubility and performance characteristics. Known for its mildness, it demonstrates broad compatibility with a diverse range of natural, mineral, and synthetic oils. This ingredient is suitable for cold-process formulations, helping to preserve heat-sensitive active ingredients, and works synergistically with high-HLB emulsifiers like polysorbates to form stable oil-in-water emulsions.
Synergies
- High-HLB emulsifiers (e.g., polysorbates)
- Natural oils
- Mineral oils
- Synthetic oils
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that PEG-40 Sorbitan Oleate is safe for use in cosmetics at concentrations not exceeding 25%. This assessment includes caveats: it should not be applied to damaged skin and must be formulated to be non-irritating. Manufacturers can control trace amounts of 1,4-dioxane, a by-product of its synthesis, through purification steps. It is generally considered to have minimal potential for human skin irritation or sensitization.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A valuable functional ingredient known for its robust emulsifying, solubilizing, and cleansing properties, contributing to product stability and skin moisture balance with a low irritation risk.
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