Treat Scalp Build-Up With Neutrogena T/Sal Therapeutic Shampoo Scalp Build-Up Control. After Just One Use, This Dermatologist-Recommended Scalp Treatment Begins To Clear Crusty Scalp Build-Up, While Relieving Itching And Flaking Associated With Severe Scalp Conditions Like Scalp Psoriasis Or Seborrheic Dermatitis And Even Helps Control The Symptoms Of Common Dandruff. This Effective Formula Of This Dandruff Control Shampoo Contains 3% Salicylic Acid, A Clinically Proven Active Ingredient And Continues To Work For Hours Even After Shampoo Is Rinsed Off. Free Of Added Color, Preservatives, And Fragrance, The Conditioning Formula Of This Scalp Shampoo Provides Maximum Relief For Dry, Itchy, Flaky Scalps.