No. SLS (sodium lauryl sulfate or sodium laureth sulfate), and other surfactants, are often added to soaps to increase lather quality or cut costs. They are commonly found in soaps, including many marketed as natural soaps, as well as glycerin soaps, liquid soaps, and shampoos. As synthetic compounds, SLS and other surfactants dry out your skin and, for many people, cause irritation. We use neither SLS nor any other surfactants. Instead, we prefer to focus on producing a high quality soap from organic oils that doesn't depend on surfactants for its lather. We carefully balance the oils in our recipe to provide the proper fatty acid mix for a wonderful, rich-and most importantly-completely natural lather.