Stock up and save with a double pack of Redken Scalp Relief Dandruff Control Shampoo . Gently cleanse hair and soothe the scalp with Redken Scalp Relief Dandruff Control Shampoo, this dermatologist tested dandruff shampoo helps to fight and control dandruff. Pyrithione zinc has antibacterial properties, clarifies and relieves the scalp, resulting in flake free, healthy and shiny hair.