Neutrogena T gel Therapeutic Shampoo Original Formula, Anti - Dandruff Treatment for Long - Lasting Relief of Itching and Flaking Scalp as a Result of Psoriasis and Seborrheic Dermatitis, 16 fl oz get lasting relief from itching and flaking with Neutrogena Tgel Therapeutic and Anti - Dandruff Shampoo Safe for daily use, this original formula helps control itching and flaking caused by chronic scalp psoriasis, seborrheic dermatitis, and even common dandruff Scientific tests prove that coal tar extract, the active ingredient in Tgel Shampoo Original, continues to work for hours even after the shampoo is rinsed off This dandruff treatment starts working after just one use and you can use this therapeutic shampoo just once a week to reduce dandruff for an entire week* From a dermatologist - recommended brand, this shampoo helps maintain a healthy scalp and leaves hair clean and manageable *Use as directed, for best results use twice a week