This nourishing, low pH Shampoo is essential to help maintain depth, tone and shine while hydrating for salon vibrant color for up to 9 weeks Cleanses to prevent stripping of color, prolong and maintain color depth, tone and shine for color treated hair Apply to wet hair and lather with a massaging motion. Rinse thoroughly. Follow with ColorLast Conditioner This nourishing, low pH conditioner is essential for maintaining and extending the life of your color. Formulated specifically for color-treated hair, it preserves salon-vibrant color for up to 9 weeks Moisturizes and extends the life of your color, leaving hair soft and detangled with extra shine and depth of color