Keratin Shampoo Bar is a gentle sulfate-free formula that replenishes keratin protein, strength & lost moisture for smother, more manageable hair. Eliminates frizz, restores elasticity & helps repair breakage while preparing hair for easy, fast blow dry. Improves & prolongs the results of any Keratin Smoothing Treatment. It’s also safe for use on natural, chemically-treated or color-treated hair.