This is the main ingredient in making liquid dishwashing and other liquid soaps and detergents. Since this is the key ingredient in soap making, it is important that you should only use the highest quality, otherwise you will end up with a low quality product. This is more popularly known as SLES which stands for Sodium Lauryl Ether Sulfate or just Sodium laureth sulfate. SLES is a surfactant. Its main function is to to lowers the surface tension among the ingredients, that is why it works well as a clean and foaming agent at the same time. This component comes when you purchase a kit from BritePH but can also be purchased as a separate product here.