Science
Mechanism of Action
PEG-8 Distearate operates as a nonionic emulsifier, critically important for blending immiscible oil and water ingredients into stable, homogeneous emulsions, thereby preventing product separation. As a surfactant, it facilitates effective cleansing by lowering surface tension, allowing water to mix with and lift oils and dirt for easy rinsing from skin and hair. Furthermore, it imparts emollient and conditioning properties, resulting in a smooth, enriched skin feel and improved hydration. Its utility extends to solubilizing other ingredients and enhancing product opacity.
Research
Clinical Evidence
High confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A 3% aqueous solution exhibits a pH of 6. This ingredient is integral to maintaining product integrity by preventing disintegration and potentially extending shelf life. It demonstrates compatibility across a broad range of surfactant types, including amphoteric, anionic, cationic, and nonionic chemistries. Prolonged exposure to temperatures above 50°C may lead to oxidation.
Synergies
- Amphoteric surfactants
- Anionic surfactants
- Cationic surfactants
- Nonionic surfactants
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG-8 Distearate safe for use in cosmetic applications, provided formulations are non-irritating. Manufacturers should ensure proper purification to minimize trace impurities like 1,4-dioxane. Direct application to damaged skin should be avoided. The FDA has acknowledged PEG-8 Distearate as safe for specific limited uses in food.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-8 Distearate is a valuable ingredient, prized for its multifunctional role in stabilizing formulations, enhancing texture, and providing skin-conditioning benefits with a low risk of irritation and sensitization.
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References
Sources