Help prevent, relieve, and eliminate dandruff symptoms and itchy scalp with the #1 pharmacist-recommended dandruff shampoo brand. Help relieve dandruff symptoms with Selsun blue® Medicated Antidandruff Shampoo. This medicated dandruff shampoo contains cooling menthol to provide a soothing and invigorating sensation to your scalp and 1% selenium sulfide for maximum strength dandruff control.