Oops! Not the color you wanted? Don't worry. Color Oops is the perfect product for you! It reverses the oxidation process of hair color pigment. When hair color is applied, small clear dye intermediates are deposited in hair. During the coloring process, hydrogen peroxide oxidizes the dye intermediates into large colorful pigments that are too big to be washed from hair. Color Oops reverses that process. When applied, Color Oops shrinks the color pigment back to small clear dye intermediates. These intermediates are still in the hair. The rinse and shampoo process is essential in assuring these intermediates are thoroughly washed from hair. We recommend washing and rinsing for 5 minutes 3-4 times, but the longer you rinse the better. If any of the dye intermediates are left in the hair, they can re-oxidize over time and your hair can re-darken. Don't let your hair win the battle over color. Take back control. Color Oops can help you do it.