A professional neutralizing purple shampoo to neutralizes undesired warm undertones. Vitamino Color Spectrum locks in glass shine. System helps to lock in your day 1 color spectrum with all 5 dimensions*. Vibrant colors up to 100 days**. Hair is cleansed & nourished.*Instrumental test with the application of Vitamino Color Spectrum shampoo, conditioner or mask and serum after 4 weeks.**Instrumental test with the application of Vitamino Color Spectrum shampoo, conditioner or mask and serum. Read less