Science
Mechanism of Action
This ingredient effectively reduces the surface tension between immiscible liquids like oil and water, facilitating their uniform dispersion to create stable emulsions. On the skin, it improves texture and hydration by forming a conditioning layer that mitigates moisture loss and restores suppleness to dry or compromised skin. Furthermore, it serves as a cleansing agent by helping water interact with and rinse away oil and dirt, and acts as a solubilizer for other active ingredients within a formula.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyethylene glycols and their derivatives are generally well-tolerated by the skin and exhibit inherent microbiological stability, often negating the need for extensive additional preservatives. The physical consistency of PEG derivatives tends to become more solid as the degree of polymerization increases.
Conflicts
- damaged skin
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that PEGs Soy Sterol, as a group, are safe when used in cosmetic products. However, a 2022 CIR review noted no reported use data for PEG-20 Soy Sterol specifically as of 2020. This ingredient should not be used in formulations applied to damaged skin due to a documented potential for systemic toxicity and sensitization. Formulations must undergo appropriate purification processes to remove potential impurities such as 1,4-dioxane and unreacted ethylene oxide residues. The FDA has also designated it as safe for general or specific, limited use in food.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-20 SOY STEROL is a valuable multifunctional ingredient, offering robust emulsifying, surfactant, and skin-conditioning benefits, provided it is formulated correctly and not used on compromised skin.
Related
Similar Ingredients
Finding similar ingredients…