L’Oréal Professionnel Vitamino Color Spectrum Shampoo for all colored hair, is the first color-care technology with ferulic acid + citric acid. It helps to lock dyes in the fiber and lock day 1 color spectrum. The result on all 5 color dimensions: ultra high glass shine, rich and vibrant colors. Hair is cleansed, instantly nourished and stronger. – lock in color vibrancy up to 100 days* – Instantly nourished, +96% Strength** *Instrumental test with full vitamino color spectrum system after 4 weeks **Instrumental test after application of shampoo