Step 1 . . # 1 ALL SYSTEMS GOT HAIR ACTION Smoothing Keratin Shampoo is a revolutionary natural cosmetic based product the first part in a three step process which will remove any dirt residue and prepare the hair/coat for the GOT HAIR ACTION Smoothing Serum Moisturizer Treatment. It should also be used to maintain the lasting effects of the Smoothing Serum Moisturizing Treatment. This a gentle residue free shampoo and is safe to be used on all dogs and cats.