Ioni-K Pre Smoothing Shampoo - 500 ML Bottle nº 1 - Shampoo before the smoothing product Why buy Ioni-K Pre-Smoothing Shampoo - 500 ML? The ionic straightening system is a new treatment Ideal for straightening wavy or curly hair The treatment can be applied on all the hair or in part It is usually applied to the fringe, getting a smooth fringe while the rest of the hair is curly Ionic straightening straightens hair leaving it completely straight