Nooties' Medicated Anti-Itch Shampoo for Dogs with Colloidal Oatmeal uses a proprietary formulation to help relieve your pets dry itchy skin. This maximum strength formula contains 1% Pramoxine HCL, 1% Lidocaine HCL. This formulation soothes the skin and helps keep your furry friend from itching and scratching. It is also soap free so it will not affect your flea & tick treatments.