Here's a great little trick for when you are traveling and you forget to bring your favorite shampoo with you. Have no fear, body wash is here to save the day! Just take a little bit of body wash/shower gel, lather it into your hair and rinse. If you can get your hands on a moisturizing body wash, that's even better because it will act as a subtle conditioner as well. While this is not ideal for very dry or color-treated hair, one or two washes shouldn't do any damage.