Redken Scalp Relief Dandruff Control Shampoo is a specialized dandruff  treatment shampoo formulated to help fight and control dandruff while leaving hair silky and soft. Suitable for the treatment of both wet and dry dandruff, it is best left to sit on the scalp for several minutes to work on dry flakes, sticky scalp residue, itchiness and discomfort associated with dandruff. It is also dermatologically tested and suitable for all hair types.