Science
Mechanism of Action
This ingredient operates by lowering the interfacial tension between otherwise immiscible phases, such as oil and water, facilitating the formation and stabilization of emulsions. Its amphiphilic molecular structure, featuring both lipophilic and hydrophilic segments, allows it to effectively solubilize poorly soluble compounds and break the surface tension of water, thereby improving its cleaning capabilities.
Research
Clinical Evidence
Insufficient-data confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
PPG-2 C9-11 Pareth-11 demonstrates robust stability across a broad pH spectrum, including both acidic and alkaline conditions. It maintains its functional activity even in the presence of oxidizing or reducing agents and hard water.
Conflicts
- strong acids
- oxidizing agents
- high temperatures
- sources of ignition
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel deemed PPG-2 C9-11 Pareth-11 safe for use in cosmetic products when specifically formulated to be non-irritating. Larger molecules of this type are generally considered less prone to skin penetration. While a precise maximum concentration for PPG-2 C9-11 Pareth-11 was not defined, related PPG Stearyl Ethers were found safe at use concentrations between 2% and 10%, not to exceed 25%. Concentrated forms or improperly formulated products may pose a risk of skin and eye irritation. A potential concern is the by-product 1,4-dioxane, a possible carcinogen, but its concentration is typically maintained below the generally acceptable level of 30 ppm.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PPG-2 C9-11 Pareth-11 is a valuable formulation aid, effectively creating and stabilizing emulsions and enhancing cleansing, with a favorable safety profile when properly formulated.
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