Dry shampoo gives your hair the appearance of being clean, since it absorbs the oil that can make hair look dirty. Find the washing routine that works for you, whether its three times a week or less, and use dry shampoo every day in between. Use dry shampoo after a trip to the gym. Dry shampoo can also come in handy when youve exercised and dont have time to take a shower before returning to work or school. Use dry shampoo after a long airplane flight or a travel day. Its convenient to carry a small bottle for times when you dont have access to a shower. Dont use dry shampoo more than a few times in a row before washing your hair with regular shampoo and water. Since dry shampoo doesnt clean skin flakes and other debris from your hair, its necessary to use water regularly.