How to make sure hair color stays deep, rich and vibrant?

Use a lower volume developer (i.e. 20 volume). Process according to the maximum timing. Five minutes before the timer goes off, slightly mist your client’s hair with Zotos Porosity Equalizer and pull color through to the ends. Recommend that your client follows up by using color-preserving haircare products, which are formulated for chemically or color-treated hair.