Water, shampoo, and conditioner work together to remove dirt and debris from your dog's skin and coat and leave hair clean, shiny, and smelling fresh. Many pet parents only shampoo and condition their dog's coat every few weeks, using a leave-in conditioner in between washes to help keep their dog's coat healthy and tangle-free. Additionally, when bathing your dog, adding conditioner to the coat helps attract extra moisture to each hair shaft but may take up extra drying time. If you're using a leave-in conditioning spray, you can also get away with just towel drying even large, double-coated dogs.