Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

PEG-9M.

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

PEG-9M is a high molecular weight, water-soluble polymer primarily utilized for its humectant properties, drawing and retaining moisture within the skin for sustained hydration. It also serves as a film-former, emulsion stabilizer, and viscosity modifier, enhancing both product texture and skin barrier support.

Summary

Humectant Film Former Penetration Enhancer Emulsifier Solubilizer Binder Emulsion Stabilizer Viscosity Increasing Agent

Science

Mechanism of Action

PEG-9M functions as a potent humectant by forming hydrogen bonds with water molecules, thereby attracting and retaining moisture on the skin's surface and within the epidermis, providing long-term hydration. Its polymeric structure facilitates the creation of a protective film, which aids in reducing trans-epidermal water loss. Furthermore, it acts as a penetration enhancer for other active ingredients, a wetting agent for hydrophobic substances, and an effective emulsifier and solubilizer within cosmetic formulations.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

For optimal stability, store light-protected in a cool, dry environment.

Synergies

  • Enhances penetration of other active ingredients
  • Aids in solubilizing hydrophobic substances
  • Stabilizes emulsions through its binding and viscosity-increasing properties

Conflicts

  • Potential for complex formation with certain active ingredients, which may reduce their bioavailability. Individual formulation testing is recommended to mitigate this risk.

Safety

Safety Profile

CIR Status
Safe as used
Sensitization risk Low

The Cosmetic Ingredient Review (CIR) Expert Panel has deemed polyethylene glycol ingredients, including PEG-9M, safe for use in cosmetics and personal care products. Higher molecular weight PEGs, such as PEG-9M (averaging 9,000 ethylene glycol units), exhibit minimal to no absorption through intact skin. Generally, PEGs are considered minimally irritating and non-sensitizing to human skin. A primary safety consideration involves ensuring control of residual ethylene oxide and 1,4-dioxane impurities, by-products of the manufacturing process, through proper purification steps. While a specific SCCS opinion for PEG-9M is not detailed, PEG ingredients are broadly permitted under the EU Cosmetics Regulation.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

PEG-9M is a valuable multi-functional polymer that provides significant hydration, supports skin barrier function, and enhances formulation stability and aesthetics with a low risk of irritation or comedogenicity.

Related

Similar Ingredients

Finding similar ingredients…