Extra Strength Denorex Dandruff Shampoo + Conditioner helps stop persistent flaking with the highest level of salicylic acid available without a prescription. It provides fast relief, while leaving your scalp feeling fresh and clean. Stop the flaking and the embarrassment with Extra Strength Denorex Dandruff Shampoo + Conditioner. Relieves bothersome itching, flaking and scaling of dandruff with an extra-strength formula intended to eliminate the recurrence of these symptoms. Comes in 2-in-1 shampoo + conditioner formula that is enriched with provitamin B5 to provide the body, shine, and manageability you’d expect from a separate conditioner. For best results, use at least 2x/week or as directed by a physician. For Moderate Dandruff. Contains cooling, soothing menthol that tingles and makes your scalp feel fresh.