COLORLAST purple shampoo from Biolage. Neutralizing violet shampoo for blonde hair. This violet shampoo is the most natural alternative to maintain a cool blonde tone without a trace of yellowish undertones. Its formula based on figs and orchids neutralizes the unwanted nuances that tend to appear in blonde hair after shampooing, to maintain a flawless mane for longer. In addition, it also has moisturizing and anti-breakage properties that minimize the aggression of discoloration, favoring soft and shiny hair. Vegan formula. It does not contain parabens.