DIY Karma Shampoo (extra delicate!) & chat on betaine – It's all in my hands
How To Shop for a Sulfate Free Shampoo: Cocamidopropyl Betaine and Decyl Glucoside - For Long, Healthy Natural Kinky and Curly Hair - Your Dry Hair Days Are Over!
Amazon.com: Artekas Innovation - COCAMIDOPROPYL BETAINE and DISODIUM 2-SULFOLAURATE - Liquid - Ultra-mild Surfactant BLEND for Homemade Cosmetics, Shampoo & Body Wash Formulations - 4.23 oz : Industrial & Scientific