Discover our newly reformulated, curly girl-friendly Curl Defining Conditioner: clinically proven to enhance bounce and deeply nourish all curl types. How to use: Use the curl conditioner as part of the Curl haircare routine. After using Defining Shampoo, smooth through the mid-lengths and ends of your hair. Leave for 1-2 minutes. Rinse thoroughly. For a deeper conditioning treatment, massage into your roots, then rinse.