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Moumoujus

PEG-45/DODECYL GLYCOL COPOLYMER.

Questionable CAS 78336-31-9 / EMULSION STABILISING

PEG-45/Dodecyl Glycol Copolymer is a multifunctional ingredient primarily recognized for its role in stabilizing cosmetic emulsions, thereby enhancing product consistency and texture. As a polyethylene glycol derivative, it also offers humectant properties to attract and retain skin moisture, contributing to hydration.

Summary

Emulsion Stabilizer Humectant Solubilizer Lubricant Dispersant Binder

Science

Mechanism of Action

This copolymer's primary mechanism involves stabilizing emulsions by preventing the separation of oil and water phases, which is crucial for maintaining a uniform product texture. It functions as a humectant, drawing water from the environment into the stratum corneum to boost skin hydration and may form a film to mitigate transepidermal water loss. Additionally, it can solubilize otherwise insoluble ingredients, provide lubrication for smooth application, act as a dispersant to ensure even distribution of formulation components, and serve as a binder in various cosmetic systems.

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

PEG-45/Dodecyl Glycol Copolymer, as a nonionic copolymer, demonstrates robust hydrolytic, pH, and electrolyte stability across a broad temperature spectrum. It effectively stabilizes emulsions without significantly increasing viscosity, facilitating the creation of low-viscosity yet stable formulations. This ingredient possesses a high capacity for absorbing both water and oil.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that PEG-based ingredients, including this copolymer, are safe for use in cosmetics, having removed prior cautionary statements regarding use on damaged skin in 2010. However, some reports indicate that PEG-45/Dodecyl Glycol Copolymer may contain toxic impurities and could increase skin permeability, advising against its application on sensitive or damaged skin. The Environmental Working Group (EWG) also highlights that its hazard score escalates if there is potential for contamination with toxic impurities.

Your Skin

Skin Compatibility

Yes Normal
Yes Dry
No Oily
No Sensitive
Irritancy Unknown
Comedogenicity Unknown

Our Assessment

Verdict

Questionable

Despite its strong performance as a formulation stabilizer and humectant, the reported potential for toxic impurities and increased skin permeability, particularly on sensitive or damaged skin, suggests a cautious approach for precision skincare applications.

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