Vitamino Color Spectrum Professional mask 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 mask formula comes with a rich creamy texture that spread evenly on the hair to intensively moisturize hair fiber for stronger, smoother hair. *Instrumental test with full Vitamino Color Spectrum system **Instrumental test with full Vitamino Color Spectrum system after 4 weeks