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Moumoujus

PEG-3 DIOLEATE.

Valuable CAS 9005-07-6 / SURFACTANT - EMULSIFYING

PEG-3 Dioleate is a polyethylene glycol derivative primarily valued for its role as a non-ionic surfactant and emulsifier, facilitating the stable blending of oil and water phases in skincare formulations. It also contributes to product texture and offers skin conditioning benefits, with potential to enhance ingredient penetration.

Summary

Emulsifier Surfactant Skin Conditioner Penetration Enhancer

Science

Mechanism of Action

This ingredient functions as a non-ionic surfactant, reducing surface tension between immiscible liquids, and as an effective emulsifying agent, promoting the formation of stable emulsions. Its polyethylene glycol structure allows it to condition the skin. Furthermore, its relatively low molecular weight may facilitate the enhanced absorption of other active ingredients into the skin.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

No data available regarding 'dusting' for this ingredient.

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

PEG-3 Dioleate, as an ester, is susceptible to hydrolysis, particularly when exposed to hot alkaline conditions. Polyethylene glycols generally exhibit accelerated aging—marked by reduced pH and increased ionic strength—under warm temperatures, light exposure, and the presence of oxygen. Optimal stability for PEG solutions is achieved by frozen storage (-20°C), followed by refrigeration (4°C), with room temperature storage being the least stable. To minimize degradation, sealed solutions should be protected from light and oxygen.

Conflicts

  • strong oxidizing agents
  • strong acids
  • high temperatures (leading to hydrolysis under alkaline conditions)

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Unknown

The Cosmetic Ingredient Review (CIR) Expert Panel has determined that PEG diesters, including PEG-3 Dioleate, are safe for use in cosmetic formulations, provided they are non-irritating. This assessment advises manufacturers to rigorously minimize the presence of impurities such as ethylene oxide and 1,4-dioxane. Products containing PEGs are generally not recommended for application on compromised or damaged skin. Formulators must also account for PEG-3 Dioleate's potential to enhance the penetration of other compounds within a product.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-3 Dioleate is a valuable ingredient for its emulsifying and surfactant properties, though formulators must adhere to safety restrictions by minimizing impurities and considering its potential to enhance penetration, especially on damaged skin.

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