• No lye is present in the final product of MamaSuds® soap. • To create soap, it needs only three ingredients: water (or other liquid), fat and lye. • Most products on the shelves of grocery stores are not true soaps as they use surfactants instead of lye. • Surfactants can be drying and irritating to the skin and are commonly found in detergents, soaps and body washes. • MamaSuds® uses just three ingredients when making liquid castile soap: Olive oil, lye and water.