For best results shampoo your hair every two to three days. Your hair will eagerly welcome the proper care and respond with suppleness and silky shine. Dry shampoo has become a popular alternative to regular shampoo in recent years. It absorbs the oil that makes your hair look greasy without drying your scalp out, like washing your hair with water every day can do. Learn how to apply dry shampoo, tips for using it to look your best, and how to make your own dry shampoo using the contents of your kitchen cabinets.