Redken Extreme Duo Your prescriptive regime for extreme strength and damage repair. Repair and strengthen damaged hair with protein. Extreme Shampoo 300ml: This hair strengthening shampoo protects shine, repair damaged hair and leaves it supple and shiny. A smart, targeted delivery system, the Protein Complex treats hair from the to the core to the tip, giving all 3 levels the custom nourishment they need. Extreme Conditioner 300ml: This hair strengthening conditioner protects shine, repair your hair and leaves it supple and shiny, also using the Protein Complex targeted delivery system. Features & Benefits Cleanses, strengthens hair and restores shine Detangles, smoothes, and strengthens hair Helps fortify weakened hair areas Leaves hair supple and shiny