Tressa Watercolors Color Maintenance Shampoo A 3-in-1, sulfate-free shampoo for everyone with colored hair, Watercolors Shampoos cleanse, condition and refresh color in one easy step. Specially formulated Reflective Color Enhancers deposit color and deliver vibrant tones and brilliant shine, while a rich foaming later nourishes every hair strand. Tone and maintain color treated hair, or enhance non-treated hair's natural hues. Watercolors is the ultimate color enhancing, conditioning shampoo. Violet Washe is best used on light/medium blondes to add glimmering sparkle to platinum blondes and silvers, while washing away golden tones.