Liquid Castile Soap Base, a product of Stephenson Personal Care, is made with organic oils and widely used throughout the cosmetic and personal-care industry. This natural base is easy to work with to create a custom formulated liquid hand soap with the addition of your preferred essential oil or used as is. Formulators may also add sodium chloride in order to thicken the material if preferred. Bulk liquid castile soap base is made of aqua, potassium oleate, potassium cocoate, glycerin, potassium citrade, and citric acid. This material is a natural clear liquid carrying a pale-yellow appearance with a viscous consistency. This versatile product can be used to create various hand soaps, skin cleansers, and hair wash rinses.