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Moumoujus

PPG-2-CETEARETH-9.

Questionable CAS - / SURFACTANT - EMULSIFYING

PPG-2-CETEARETH-9 is a synthetic polyoxypropylene, polyoxyethylene ether of Cetearyl Alcohol. It primarily functions as an emulsifying surfactant, ensuring the stable blend of oil and water phases in skincare formulations, and also acts as a solubilizer and solvent.

Summary

Emulsifying Surfactant Solubilizer Solvent Penetration Enhancer

Science

Mechanism of Action

This ingredient operates by significantly reducing the interfacial tension between immiscible substances, allowing for the creation and stabilization of finely dispersed oil-in-water or water-in-oil emulsions. Its structure also enables it to solubilize other ingredients and serve as a solvent, thereby facilitating enhanced dermal penetration of co-formulated active compounds.

Research

Clinical Evidence

Insufficient-data 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

Polypropylene glycols exhibit a wide spectrum of viscosity and solubility properties. Formulations incorporating PPG-2-CETEARETH-9 must be meticulously designed to ensure they are non-irritating to the skin.

Conflicts

  • Application to damaged or compromised skin

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Unknown

The CIR Expert Panel concluded that PPG-2-CETEARETH-9 and similar alkyl PEG/PPG ethers are safe for cosmetic use when formulated to be non-irritating. However, a critical restriction advises against their application on damaged skin, citing studies where PEG ingredients applied to burn patients led to kidney damage. Concerns regarding potential contamination with toxic impurities such as ethylene oxide and 1,4-dioxane, stemming from the manufacturing process, exist. No specific maximum concentration for PPG-2-CETEARETH-9 was reported in the provided data, though it has been identified in 9 cosmetic formulations.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

While offering essential formulation benefits as an emulsifier and penetration enhancer, the documented caution against its use on damaged skin and the potential for manufacturing impurities render PPG-2-CETEARETH-9 a questionable ingredient for precision skincare.

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