ion Keratin Smoothing Shampoo is a gentle sulfate-free formula that replenishes keratin protein, strength and lost moisture for smoother, more manageable hair. Eliminates frizz, restores elasticity and helps repair breakage while preparing hair for easy, fast blow-drys. Improves and prolongs the results of any Keratin Smoothing Treatment and is also safe for use on natural, chemically-treated or color-treated hair. From volumizing to smoothing, moisturizing to color-protecting, Ion shampoos, conditioners, and treatments are formulated to provide impeccable, professional results for all hair types.