Sodium Stearoyl Lactylate (SSL) is another fantastic emulsifier that helps stabilize oil-in-water formulations such as a lotion. SSL is a natural, food-grade emulsifier derived from the sodium salt of lactic acid. Because of the sodium makeup of SSL, this additive is able to penetrate the top dead layers of skin for enhanced skin moisturizing capabilities. SSL is part of an emulsifying system and needs to be used in conjunction with another emulsifier in order to stabilize the emulsion. I use SSL in several of my goat-milk lotions, as well as my Simply Radiant Face Cream and just love how it feels on my skin! EcoCert Certified.