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Moumoujus

PEG-160M.

Valuable CAS 25322-68-3 / BINDING, EMULSION STABILISING, VISCOSITY CONTROLLING

PEG-160M is a high molecular weight, water-soluble polyethylene glycol polymer. It functions as a mild, nonionic ingredient that contributes to formulation stability and enhances texture, while providing beneficial film-forming and humectant properties to the skin.

Summary

Binding Emulsion Stabilizing Viscosity Controlling Film-forming Humectant Provides lubricity

Science

Mechanism of Action

This versatile, nonionic polymer creates a smooth, protective film on the skin's surface, improving tactile feel and lubricity. As a polyethylene glycol, it actively draws and retains moisture by forming hydrogen bonds with water molecules, thereby acting as a humectant to minimize transepidermal water loss. Within cosmetic formulations, it effectively stabilizes emulsions, controls product viscosity, and serves as a binding agent.

Research

Clinical Evidence

Medium confidence
Effective range 0.1–1%
Optimal

0.1-1%

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 6 – 8
0 7 14

Stability

PEG-160M presents as a white powder. Solutions exhibit optimal stability when stored frozen at -20°C, and enhanced stability when refrigerated at 4°C compared to ambient room temperatures. Accelerated aging, characterized by reduced pH and increased ionic strength, can be triggered by elevated temperatures, light exposure, and the presence of oxygen. Proper storage requires a cool, dry, light-protected environment.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that polyethylene glycol (PEG) ingredients, including PEG-160M, are safe for use in cosmetics. Higher molecular weight PEGs (PEG-75 and above) are not significantly absorbed through intact skin and have been found to be minimally irritating and not sensitizing. While initial concerns existed regarding use on severely burned skin, the CIR Panel later removed this caveat. The FDA has designated PEGs as safe for general or specific limited use in food and permits their use in cosmetics. The SCCS has not issued a specific opinion on PEG-160M. Potential trace impurities like 1,4-dioxane, a byproduct of the ethoxylation process, can be effectively managed through purification procedures.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-160M is a versatile, safe, and widely compatible polymer that enhances product texture and stability while providing beneficial humectant and film-forming properties for all skin types.

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