Redken Scalp Relief Dandruff Control Shampoo is a specialized treatment that helps fight and control dandruff. Pyrithione zinc = fights & controls dandruff. Apply to wet or dry hair, massaging into scalp. Leave on 5 minutes. Wet hair, lather and rinse. Can be used daily. Redken Scalp Relief shampoo for dry, flaking scalp and hair, will help fight scalp itching, irritation, redness and flaking associated with dandruff.