L'Oréal Professionnel Vitamino Color Spectrum Green Shampoo. This shampoo is formulated to neutralize unwanted warm tones in dark brown hair. Enriched with patented technology, this shampoo protects the color and enhances its luminosity. Its corrective action improves the shine, contrast and saturation of the hair from the first use, providing long-lasting results. In addition, it helps maintain vibrant color, offering soft and shiny hair.