Joico color balance purple shampoo 10.1 fl. oz. + purple conditioner 10.1 oz. duonThe shampoo and conditioner preserves 89 percent of your precious hair-colornPreserves 89 percent of hair color for up to eight full weeksnThe shampoo and conditioner preserves 89 percent of your precious hair-color for nearly eight full weeks by bonding to hair fibers the color-correcting conditioner instantly manages to neutralize nasty brassy tones and preserves 89 percent of hair color for up to eight full weeks.