Discover our best shampoo duo sets. Comprised of a deluxe size plus its travel size equivalent, these shampoo duo sets for all hair types are intended to be one for the home and one for the road. The deluxe size shampoo is to be a staple in the shower offering up to 60 washes at home, meanwhile the travel size is to accompany you on the plane, train, car, and any other trip so that you are never left without the best and most appropriate care for your hair. Shampoo duo sets are available for a variety of hair types and hair concerns from damaged hair to blonde hair and hair in need of a refresh. Take our hair quiz and find the perfect shampoo duo set for your hair needs.