Vitamino Color Spectrum Professional shampoo by L'Oreal Professionnel, formulated with Ferulic Acid + Citric Acid. 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 depth between multiple shades. 4. Tone: unwanted reflects are neutralized. 5. Brightness: level of lightness or darkness are well preserved. The ultra caring shampoo formula comes with a luxurious creamy texture that turns into a dense foam once lathered. It cleanses the fiber thoroughly for instantly nourished and stronger hair. *Instrumental test with full Vitamino Color Spectrum system **Instrumental test with full Vitamino Color Spectrum system after 4 weeks