Redken’s Color Extend Graydiant Purple Shampoo brightens and nourishes gray, silver, light blonde hair & light blonde color treated hair. This anti-yellow shampoo is a hair toner that instantly neutralizes brassy hair for a more radiant hair color. Formulated with customized violet pigments & Citric Acid, this shampoo strengthens and transforms gray, silver and light blonde hair for strands that are 2x stronger* with increased softness and shine. (*when you use Graydiant Shampoo and Conditioner as a system).