Vitamino Color Spectrum Professional Glass Shine Serum by L'Oreal Professionnel, enriched with 5% Alpha-silane. Our patented leave in serum for instant glass shine & lasting results up to 10 washes***. Formulated without water, Alpha-silane is an active care ingredient that creates a protective layer on the surface of hair fiber when it is activated by heat. The result: -Colored hair protection against UV damages -Anti-frizz effect up to 72H **** -Anti-humidity (up to 80% humidity in the air****). - Heat protection up to 230°C (450°F****) Hair is instantly more hydrated, smoothed and softer that resists up to 10 shampoos.**** Now, lock in your day 1 color spectrum with all 5 dimensions by using the full routine Vitamino Color Spectrum system*. Vibrant colors 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. *Instrumental test with full Vitamino Color Spectrum system after 4 weeks. **Instrumental tests with the full Vitamino Color Spectrum ***On multiple hair attributes, instrumental tests. ****Instrumental tests.