With normal use, this toning conditioner (waiting on Andrea) will not impart dye on your hair; however, sometimes with overuse of Colour Renew Tone-Correcting Shampoo, a purple hue will be imparted on the hair. This can happen when hair is extremely damaged or is of the lightest blonde shades. To avoid this, we recommend that you use this product no more than three times per week and, on the other days, use your normal daily shampoo and conditioner. The colour is not permanent and if you discontinue use, it should fade away with normal washings.