dpHUE Cool Blonde Shampoo gently cleanses while using specially formulated violet pigments to neutralize unwanted yellow and brassy tones, leaving blonde hair color looking fresh between salon visits. This richly foaming shampoo is made with silk proteins and Hibiscus Flower Extract to strengthen hair, improve luster and increase brightness. The sulfate-free formula doesn't strip hair color and can be used on color treated or natural blonde hair.