Science
Mechanism of Action
MYRETH-4 operates by significantly lowering the interfacial tension between immiscible phases, such as oil and water. As a surfactant, its amphiphilic structure enables it to encapsulate lipophilic substances like dirt and sebum, allowing them to be rinsed away efficiently with water. In its role as an emulsifier, MYRETH-4 ensures the uniform dispersion of oil-soluble active ingredients within water-based formulations, contributing to product stability and consistent delivery.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel classified MYRETH-4 as an Alkyl PEG Ether, deeming it safe for use when formulated to be nonirritating. However, the ethoxylation process inherent in its production can potentially introduce trace amounts of ethylene oxide and 1,4-dioxane, both recognized carcinogens. The precise safety profile is thus dependent on the purity levels achieved during manufacturing, information not consistently disclosed by suppliers.
Your Skin
Skin Compatibility
Our Assessment
Verdict
MYRETH-4 is a highly effective surfactant and emulsifier, valuable for stable formulations and cleansing, yet its use warrants careful consideration due to potential manufacturing impurities like ethylene oxide and 1,4-dioxane.
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References
Sources