DetailsThe Artero Intensifying Color Solution is a treatment to enhance coats of any color. How to apply: Take a small amount in the hand, rub hands together, and when white lather appears, massage gently into the hair. Do not leave on for more than 3 minutes. Rinse thoroughly. This product is not a shampoo, it is an enhancing treatment that we recommend using after a bath with out color enhancing shampoo Blanc.