American Crew Precision Blend Shampoo 250ml The innovative formula in this American Crew Precision Blend Shampoo is designed specifically for men. Containing polyphenols & Benzophenone-4, the ingredients in this shampoo combine together to strengthen, protect & deeply cleanse the hair. With powerful moisture binding properties, the Precision Blend Shampoo works to protect hair colour from fading & damaging UV rays, leaving hair shiny & tangle resistant.