Laureth-4 is a synthetic polymer used in skincare products as a cleansing agent, emulsifier, and texture enhancer. It is safe for all skin types except those allergic to it. PEG, a component of Laureth-4, may contain potentially toxic manufacturing impurities such as 1,4-dioxane. Laureth-4 is comedogenic and can clog pores.
NA
All skin types except those that have an identified allergy to it.
Potential skin irritation, allergies, and pore-clogging
NA
Synthetically made from lauryl alcohol and PEG
Safe, subject to concentration or use limitations
Good
Laureth-4's viscosity increases with its numerical value, leading to white, waxy solids. Laureth-4 may contain potentially toxic manufacturing impurities such as 1,4-dioxane due to the presence of PEG. Laureth-4 is created through ethoxylation, a process that produces 1,4-dioxane as a byproduct. 1,4-dioxane is a known animal carcinogen that penetrates readily into the skin. It has also been linked with skin allergies. Laureth-4 is used in a variety of skincare products, including cleansers, moisturizers, and sunscreens. Laureth-4 and Laureth-23 are polyoxyethers of lauryl alcohol. They function as surfactants, emulsifiers, and solubilizers in cosmetic and pharmaceutical products. They are useful due to their chemical inertness to hydrolytic decomposition.
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