Vitamino Color Spectrum Shampoo , ultra-nourishing and strengthening for color-treated hair . Vitamino Color Spectrum is the professional color care technology for multidimensional color brilliance with a glass hair effect. This routine helps lock color pigments into the hair , thus maintaining the color brilliance of day 1. L'Oréal Professionnel's Vitamino Color Spectrum Shampoo is specially formulated for color-treated hair. Enriched with ferulic and citric acids , it helps lock in the color pigments, thus preserving brilliance in all five color dimensions .* The result: Shine: Ultra-strong glass shine. Vibrancy: Rich colors. Contrast: Optimal depth of color tones. Color: No unwanted reflections. Luminous: Light and dark tones are revitalized. The formula, with its luxurious, creamy texture, thoroughly cleanses the hair fiber, leaving hair instantly strengthened and nourished. *Instrumental test: After four weeks of using the full Vitamino Color Spectrum routine.