Bio Ionic Retex Hair Straightening System utilizes advanced ionic technology to straighten the hair with amazing results. This breakthrough formula restores and revitalizes the hair to a healthier condition, leaving the hair smooth and silky with incredibly shine. Designed to be used with Bio Ionic Straightening Irons. Features: Advanced Ionic Technology Dramatic Results For all hair types No Sodium Hydroxide No Offensive Odor No Mixing Benefits: Leaves Hair Vibrant, Healthy-Looking Softens and Strengthens Hair Silkens and Smooths Hair Gives Body and Bounce Adds Glossy Shine Can be used on Colored Hair. You choose with the original, industry first thermal straightening system. The power of IonTransformation is fully realized with Bio Ionic ReTeX system that permanently retexturizes the hair.