Vitamino Color Spectrum Professional Red Tones Neutralizing Shampoo by L'Oreal Professionnel, formulated with green dyes & caring agents. The system helps to lock dyes in the fiber to lock in your day 1 color vibrancy up to 100 days*. The result on all 5 color dimensions**: 1. Shine: ultra-high glass shine. 2. Saturation: rich vibrant color. 3. Contrast: optimal/distinctive depth between multiple shades. 4. Tone: unwanted reflects are neutralized. 5. Brightness: level of lightness or darkness are well preserved. The creamy green formula instantly neutralizes undesired red undertones for dark brown hair. Hair is cleansed & nourished. *Instrumental test with full Vitamino Color Spectrum system **Instrumental test with full Vitamino Color Spectrum system after 4 weeks