Using this Wahl no - rinse shampoo is a breeze. First, shake the bottle well. Then, spray the shampoo directly onto your dog's dry coat. Rub it in gently with your hands, making sure to cover all areas with dirt. You don't have to worry about rinsing it off; just let it dry naturally. This will leave your dog's coat clean and fresh. When using the shampoo, keep it away from your dog's eyes and mouth. If your dog has a sensitive skin condition, it's a good idea to test a small area of the coat first. Store the shampoo in a cool, dry place. Don't expose it to extreme temperatures, as this could affect its quality. With proper use and storage, this shampoo will keep your dog looking and feeling great for a long time.