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PEG-8 CASTOR OIL.

Valuable CAS 61791-12-6 / SURFACTANT - CLEANSING, SURFACTANT - EMULSIFYING

PEG-8 Castor Oil is a versatile ingredient that primarily functions as an emulsifier and solubilizer, essential for blending oil and water phases into stable formulations. It also acts as a humectant, drawing moisture to the skin to enhance hydration and prevent product dry-out.

Summary

Emulsifying Surfactant Solubilizer Humectant

Science

Mechanism of Action

This ingredient operates as a surfactant by reducing the interfacial tension between immiscible liquids, thereby creating stable oil-in-water emulsions. Its solubilizing action allows for the uniform dispersion of oil-soluble components, such as fragrances or active compounds, throughout aqueous solutions. Additionally, PEG-8 Castor Oil's humectant properties enable it to attract and retain water, contributing to skin moisture and maintaining the stability of cosmetic formulas. Related PEG castor oils may also support skin barrier function and exhibit anti-inflammatory effects.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Related PEG-40 Hydrogenated Castor Oil exhibits high chemical stability. Aqueous solutions can be sterilized by heating to 120°C, which might cause a slight reduction in pH. Extended exposure to heat can lead to phase separation, though the formulation can typically be re-homogenized upon cooling.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The CIR Expert Panel has concluded that PEG-8 Castor Oil, along with 129 related PEGylated oils, is safe for use in cosmetics under current practices and concentrations, provided formulations are non-irritating. While a specific maximum concentration for PEG-8 Castor Oil is not provided, related ingredients like PEG-30 to -40 Castor Oil have been deemed safe up to 50%, and their hydrogenated counterparts up to 100%. It is recommended that purification processes are implemented to remove potential impurities like 1,4-dioxane and ethylene oxide, which can be byproducts of ethoxylation. The FDA classifies castor oil as a permitted direct food flavoring agent, and PEG Castor Oil ingredients (molecular weight 400-3,000) are approved as indirect food additives.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Verdict

Valuable

PEG-8 Castor Oil is a valuable ingredient for its ability to stabilize formulations as an emulsifier and solubilizer, while also contributing to skin hydration as a humectant, deemed safe for various skin types when properly formulated.

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