T/Gel Therapeutic Shampoo Stubborn Itch soothes intense scalp itch with cooling Menthol. Recommended by dermatologists for chronic Scalp Psoriasis, Seborrheic Dermatitis and even common Dandruff. Clinical tests prove that the active ingredients in T/Gel Therapeutic Shampoo Stubborn Itch continues to work for hours even after the shampoo is rinsed off.