Laureth-3
Reviewed by Emma · Last updated 18 Aug 2026
Also known as: PEG-3 Lauryl Ether, Polyoxyethylene (3) Lauryl Ether, Triethylene Glycol Dodecyl Ether, ETHANOL, 2-(2-(2-(DODECYLOXY)ETHOXY)ETHOXY)-
Works as an emulsifier and cleansing agent in skin care formulas | Also functions as a texture enhancer/thickening agent
Addresses
EWG Safety Score
What Is Laureth-3?
Laureth-3 is a liquid emulsifier and cleansing agent derived from lauryl alcohol, which is a non-sensitizing fatty alcohol obtained from coconut oil. In skin care formulations, it is commonly used to help water and oil-based ingredients to mix. Its solubilizing properties make it popular in products where a milky consistency is desired. In products such as shampoos and shower gels, it is often used as a thickening agent for optimal aesthetics.
The number 3 correlates with the viscosity (thickness) of this ingredient. The higher the laureth’s numerical value, the greater the viscosity.
Laureth-3 has a proven track record of safety in cosmetics. In 2012, the Cosmetic Ingredient Review Expert Panel reaffirmed its safety status. Their report looked at products using concentrations between 0.0004-20%, although typical use levels are closer to 1-5%.
Clinical Evidence & References
Published Research
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Making Cosmetics, Accessed January 2022, ePublication [https://www.makingcosmetics.com/EMF-LAUR3-01.html]
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CosmeticsInfo.org, Accessed January 2022, ePublication [https://www.cosmeticsinfo.org/ingredient/laureth-3/]
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International Journal of Toxicology, October 2012, pages 169S-244S [https://journals.sagepub.com/doi/10.1177/1091581812444141]
Frequently Asked Questions
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Lanolin Alcohol
Emollient derived from lanolin | Not a skin sensitizer
Laureth-12
A mild surfactant and emulsifier that stabilises formulations
Laureth-25
A gentle surfactant that cleanses and stabilises emulsions in skincare formulations
Laureth-4
Works as a cleansing agent in skin care formulas | Also functions as an emulsifier/stabiliser/solubizer and texture enhancer
Laureth-5 Carboxylic Acid
A mild surfactant that cleanses and stabilises formulations
Laureth-9
A gentle emulsifier that helps oil and water blend seamlessly in skincare formulations
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