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PEG-10 GLYCERYL STEARATE.

Valuable CAS 51158-08-8 / SURFACTANT - EMULSIFYING

PEG-10 Glyceryl Stearate is a versatile polyoxyethylene derivative primarily functioning as an emulsifier to create stable oil-in-water formulations, while also offering conditioning and humectant benefits to the skin.

Summary

Emollient Emulsifying Solubilizer Surfactant Humectant Skin Conditioner

Science

Mechanism of Action

This ingredient, a polyoxyethylene (10 moles) glyceryl monostearate, acts as an effective emulsifier and solubilizer. With an HLB value of 11, it moderates interfacial tension between oil and water phases, facilitating the formation and stabilization of oil-in-water emulsions. Beyond its emulsifying capacity, it contributes to skin conditioning, acts as a surfactant, and offers humectant properties.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Key findings

  1. 01 Clinical evaluations on structurally similar PEG Stearates (PEG-2, -8, -40, -50, and -100 Stearates) indicated an absence of irritation or sensitization at concentrations up to 25%. Specific studies defining 'effective concentrations' as a dermatological active for PEG-10 Glyceryl Stearate are not readily available, as its primary role is functional within the formulation.

Transparency

Dusting Analysis

Not commonly dusted

Information not available.

The Formula

Formulation

Solubility
Both
Optimal pH 4 – 9
0 7 14

Stability

PEG-10 Glyceryl Stearate demonstrates chemical stability across a broad pH spectrum, generally between 4.0 and 9.0. For formulation, it can be integrated into the oil phase and heated to temperatures between 60-70°C for complete dissolution. This ingredient does not contribute significantly to emulsion viscosity, allowing for independent rheology control.

Conflicts

  • Concentrated nitric acid
  • Concentrated sulfuric acid
  • Strong oxidizing agents

Safety

Safety Profile

CIR Status
Safe as used
Max tested
25%
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG Stearates, including PEG-10 Stearate, safe for cosmetic applications at current usage levels and concentrations. It is also recognized as safe for specific food uses by the U.S. FDA. While concerns regarding impurities like ethylene oxide and 1,4-dioxane exist for PEGs, the risk is minimized in products adhering to stringent manufacturing standards, with dioxane levels typically below 10 ppm.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-10 Glyceryl Stearate is a valuable ingredient, performing as a safe and stable emulsifier crucial for maintaining product integrity across diverse formulations, with additional conditioning benefits for the skin.

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