Science
Mechanism of Action
On the skin, Laureth-7 functions by significantly reducing the surface tension between immiscible substances. This action allows water to effectively mix with and lift oils, sebum, and environmental debris, facilitating thorough cleansing and easy rinsing. Beyond cleansing, it enhances product texture, solubilizes fragrances and emollients, and ensures active substances are uniformly dispersed within the formulation.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Laureth-7 exhibits robust chemical stability across a wide pH range, maintaining its structural integrity effectively even at low pH levels. Its Hydrophilic-Lipophilic Balance (HLB) value of 12 indicates its suitability for creating oil-in-water emulsions.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded Laureth-7 is safe for cosmetic use when formulated to be non-irritating. However, as a polyethylene glycol-based surfactant, it may contain potentially toxic impurities like 1,4-dioxane and ethylene oxide, which are recognized carcinogens; these can be mitigated through stringent purification processes. The Scientific Committee on Consumer Safety (SCCS) was unable to fully assess its safe use due to insufficient pharmacological and toxicological data, noting a potential for stronger local anesthetic effects compared to polidocanol. It is utilized in cosmetics regulated by the FDA and is listed as safe under the general provisions of the EU Cosmetics Regulation.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While Laureth-7 offers functional benefits as an emulsifier and surfactant, its high potential for comedogenicity and medium irritancy, combined with concerns regarding toxic impurities and a lack of comprehensive safety data from the SCCS, render it unsuitable for precision skincare formulations.
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References
Sources