How can I travel with a shampoo bar? 31 January 2023 14:48 Updated Make sure your shampoo bar is dry, and then place it in a portable tin or case. Related articles How long will the bar last? How should the shampoo bar be stored? Does a shampoo bar work as well as liquid shampoo? Is there a transition period associated with shampoo bars? Will you have a conditioner bar?