Science
Mechanism of Action
This ingredient operates as a surface-active agent, effectively reducing interfacial tension between immiscible components, such as oil and water. Its molecular structure, featuring both lipophilic (oil-attracting) and hydrophilic (water-attracting) regions, enables the formation and stabilization of fine emulsions, preventing phase separation. It also exhibits properties as a solubilizer and wetting agent, enhancing product consistency and performance.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Related alkyl PEG/PPG ethers, such as C9-11 Pareth-5, demonstrate stability across acidic and mildly alkaline pH ranges. They are also resilient to the presence of oxidizing and reducing agents, as well as hard water, making them robust for diverse formulation environments.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has determined PPG-2 C9-11 Pareth-5, within the alkyl PEG/PPG ether class, to be safe for use in cosmetics under current practices and concentrations, provided formulations are designed to be non-irritating. While no specific maximum concentration is given, usage is generally lower than for related ingredients. Manufacturers must ensure levels of 1,4-dioxane, a potential processing byproduct, remain below regulatory limits (e.g., <2 ppm) to maintain safety. There is no specific SCCS opinion or FDA status cited for this ingredient.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PPG-2 C9-11 Pareth-5 is a valuable formulation ingredient, serving as an effective surfactant and emulsifier to ensure product stability and texture, with a favorable safety profile when properly formulated.
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References
Sources