Our Cell Therapy Systems are the perfect way to experience the amazing benefits of Ovation products. These three-step systems provide a Shampoo, Cell Therapy and a Conditioner that work synergistically to maximize performance and cost-savings. The Cell Therapy formula is the same in each system. The difference between the systems resides in the moisture levels in the Shampoo & Conditioner which complete the system. We recommend choosing your Cell Therapy System based on your hair type and/or hair care concern. If you would like a personalized recommendation, our Personal Account Representatives are available to help Monday through Friday 8:00 a.m. to 4:00 p.m. PST at 888.411.3252