Sodium lauroyl methyl isethionate is a cleansing agent that can be found in clarifying shampoos, body washes and even toothpastes. Derived from coconuts, it’s a safe, mild alternative to harsh sulfates and other aggressive surfactants that can strip the hair of its natural oils.

In 2017, the Cosmetic Ingredient Review Expert Panel deemed sodium lauroyl methyl isethionate safe as used in personal care products. Their report looked at products containing up to 10.1% concentration.

Best Ingredients for Hair

Our scalp produces a natural oil called sebum. Too much sebum buildup can leave our locks looking dull and greasy, but some is necessary to keep the hair and scalp healthy and moisturized. Sodium lauroyl methyl isethionate helps achieve that balance: it gently cleanses the hair without removing those vital oils, allowing the hair to retain its moisture and shine. Plus, unlike other sulfate alternatives, it produces a dense, creamy lather—so you can still suds up without stripping your strands.