Redken Scalp Dandruff Control Shampoo Information Buy any 2 Redken items and get 2 GWP's for free.While stocks last.Redken's Scalp Relief Dandruff Control Shampoo is a dandruff shampoo that has been dermatologist tested. This specialized hair treatment helps fight and control dandruff and relieve the symptoms of dandruff including itching, flaking and redness. Hair is left flake-free and silky smooth. £17.21 250ml Sorry, product is not in stock at the moment.