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Moumoujus

PEG-3 GLYCERYL TRISTEARATE.

Valuable CAS 41080-66-4 / SKIN CONDITIONING - EMOLLIENT, SURFACTANT - EMULSIFYING

A polyoxyethylated glyceryl ester, PEG-3 Glyceryl Tristearate functions as both a skin conditioning agent and an emulsifier. It enhances skin suppleness and smoothness while enabling the stable integration of oil and water phases in cosmetic formulations.

Summary

Emollient Emulsifier

Science

Mechanism of Action

Operating as a bifunctional agent, PEG-3 Glyceryl Tristearate provides emollient benefits by smoothing and softening the skin's surface. Its emulsifying capability is crucial for reducing interfacial tension, thereby forming and stabilizing oil-in-water mixtures. The polyethylene glycol moiety facilitates gradual skin hydration through hydrogen bonding with water molecules, aiding in moisture retention and reinforcing the skin barrier. Concurrently, the glyceryl tristearate component forms a protective film, further diminishing moisture loss and imparting lubrication.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Generally stable under recommended storage conditions, though exposure to high temperatures and open flames should be prevented. It demonstrates stability in the presence of moderately strong acids, alkalis, and electrolytes.

Conflicts

  • strong acids
  • bases
  • oxidizing agents

Safety

Safety Profile

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

The Cosmetic Ingredient Review (CIR) Expert Panel concluded that related PEG Stearates are safe for use in cosmetics. PEG-3 Glyceryl Tristearate is generally well-tolerated, demonstrating low potential for ocular or dermal irritation and negligible acute or chronic toxicity, as it does not readily penetrate intact skin. While historical advisories suggested caution on damaged skin for some PEGs, this concern has been mitigated for many derivatives. Manufacturers are advised to ensure rigorous purification to minimize impurities such as ethylene oxide and 1,4-dioxane. The non-PEGylated glyceryl tristearate component is recognized as Generally Recognized As Safe (GRAS) by the FDA for food applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

A valuable dual-function ingredient that acts as both an emollient and an emulsifier, offering skin conditioning benefits and formulation stability with low irritation potential across all skin types.

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