Color treated hair can fade and lose its luster over time. Biolage Color Last Shampoo is essential for maintaining colored hair health and repairing hair damage.- Gently cleanses and helps maintain the color depth, tone and shine for vivid color-treated hair- This nourishing shampoo protects hair from environmental damage and strengthens hair while hydrating. This hair protectant gives her hair salon-vibrant color for up to 9 weeks.- Apply to wet hair and lather with a massaging motion. Rinse thoroughly. We recommend that you pair the Color Last Shampoo with Color Last Conditioner to help maintain your color-treated hair.- Low pH shampoo for color treated hair helps prolong color vibrancy. Gently cleanses to prevent unnecessary stripping of color. Paraben-free formula is suitable for color treated and natural hair.