Science
Mechanism of Action
This ingredient functions as both a surfactant and an emulsifying agent. It effectively lowers the interfacial tension between immiscible liquids like oil and water, facilitating the formation of stable, uniform emulsions. This dual action is crucial for integrating both water-soluble and oil-soluble active ingredients into a cohesive product. Furthermore, it contributes to the cleansing action of formulations.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has determined this ingredient, belonging to the alkyl PEG/PPG ether group, to be safe for cosmetic use within current industry practices and concentrations, provided the final formulation is non-irritating. A critical consideration is the potential presence of residual ethylene oxide and 1,4-dioxane, known carcinogens, which can result from the ethoxylation process used to produce 'pareth' compounds. The actual safety profile is therefore highly dependent on the ingredient's purity, information that isn't always transparently shared by manufacturers. Nonetheless, polypropylene glycols and their derivatives typically demonstrate excellent skin compatibility.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PPG-2 C9-11 PARETH-7 is a valuable formulating agent, crucial for creating stable emulsions and aiding in effective cleansing, though purity considerations are important for overall safety.
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References
Sources