Article last updated: October 15, 2024
Magnesium Laureth Sulfate, often abbreviated as MLES, is a surfactant commonly used in cosmetic and personal care products. It is derived from lauryl alcohol, which is typically sourced from coconut oil or palm kernel oil. The chemical composition of MLES includes poly(oxy-1,2-ethanediyl) with an average molar ratio of 1-4 ethylene oxide units, combined with magnesium salts of sulfated dodecyloxy. This complex structure allows it to effectively lower the surface tension of water, making it an excellent cleansing agent.
The history of Magnesium Laureth Sulfate in cosmetics dates back to the mid-20th century when the demand for more effective and milder surfactants began to rise. Traditional soap was often too harsh for sensitive skin, leading to the development of synthetic surfactants like MLES. Over the years, it has become a staple in various products such as shampoos, body washes, and facial cleansers due to its ability to create a rich lather while being relatively gentle on the skin.
The production of Magnesium Laureth Sulfate involves a multi-step chemical process. First, lauryl alcohol is ethoxylated by reacting it with ethylene oxide, forming laureth alcohol. This laureth alcohol is then sulfated using sulfur trioxide or chlorosulfuric acid, resulting in laureth sulfate. Finally, the laureth sulfate is neutralized with magnesium hydroxide or magnesium oxide to produce Magnesium Laureth Sulfate. This meticulous process ensures that the final product is both effective and safe for use in various cosmetic formulations.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Magnesium Laureth Sulfate:
Magnesium Laureth Sulfate is primarily known for its cleansing properties. This means it helps to remove dirt, oil, and impurities from the skin and hair. When used in products like shampoos, body washes, and facial cleansers, it creates a lather that effectively lifts away grime, leaving you feeling fresh and clean. This is particularly beneficial for those with oily skin or hair, as it helps to control excess oil production.
Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).
Magnesium Laureth Sulfate is generally considered safe for use in cosmetic products. However, like any ingredient, it may cause adverse reactions in some individuals. Here are some potential side effects of topical application:
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Magnesium Laureth Sulfate during pregnancy and breastfeeding are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice.
While adverse reactions to Magnesium Laureth Sulfate are not extremely common, they can occur, especially in individuals with sensitive skin. It is recommended to perform a patch test before widespread usage to ensure that the product is suitable for your skin type.
Magnesium Laureth Sulfate has a comedogenic rating of 1, which means it is considered to be minimally comedogenic. This low rating indicates that it is unlikely to clog pores and cause acne or breakouts, making it generally suitable for individuals prone to blemishes.
