Science
Mechanism of Action
This ingredient functions by significantly lowering the interfacial tension between otherwise immiscible liquid phases, effectively creating stable emulsions of oil and water. As a surfactant, it aids in the dispersion and removal of impurities. It also excels as a solvent and solubilizing agent, particularly for incorporating lipophilic substances like fragrances into aqueous or hydroalcoholic solutions. On the skin, it contributes to hydration by helping to maintain the skin barrier's integrity and facilitating moisture retention within the epidermis. Additionally, it improves the percutaneous absorption of other active ingredients into both skin and hair.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
The ingredient demonstrates robust stability under neutral, mild acid, and mild alkaline conditions. However, its ester bonds are susceptible to hydrolysis when exposed to strong acid or strong alkali environments.
Conflicts
- strong acids
- strong alkalis
- strong oxidants (flammable risk)
Safety
Safety Profile
The CIR Expert Panel has concluded that chemically related PEGylated oils, including components of this ingredient, are safe for cosmetic use at concentrations up to 100%, provided formulations are nonirritating. Potential trace contamination by 1,4-dioxane and ethylene oxide, common by-products of ethoxylation, can be controlled through purification. This ingredient aligns with FDA guidelines for indirect food additives (as a PEG castor oil) and is permitted under general provisions of the European Union's Cosmetics Regulation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PEG-20 Hydrogenated Castor Oil Isostearate is a valuable multi-functional ingredient, highly effective as an emulsifier and solubilizer, while offering skin moisturizing and active penetration-enhancing benefits with a low irritancy profile across all skin types.
Related
Similar Ingredients
Finding similar ingredients…