Sodium Lauroyl Glutamate

Sodium Lauroyl Glutamate is an amino-acid based mild surfactant that is used in formulas as a primary or secondary cleansing agent. This means it helps lift away oil, dirt, and makeup.

You'll see this ingredient in facial cleansers, shampoos, and even toothpaste because it foams reasonably well while being much gentler than harsher surfactants like SLS.

A study comparing surfactant mixtures found that Sodium Lauroyl Glutamate caused visibly less disruption to skin lipid structure and less irritation than SLS when tested on human subjects; this correlated with the data from in vivo results as well.

The Tenside, Surfactants, Detergents cosmetics industry journal has also concluded that amino acid based surfactants are generally milder than their corresponding alkyl sulfate counterparts. They also stated glutamates in particular are considered one of the gentler options in the category.

The Cosmetic Ingredient Review (CIR) Expert Panel has reviewed dermal irritation and sensitization data for this ingredient at the highest reported use concentration and concluded it to be safe in present practices.

Typical use concentrations tend to run low (generally less than 10%) though the CIR's review noted the highest reported use concentration was 40% as a raw material blend (and not a diluted finished cosmetic product).