A reversible container is provided with a hollow housing and removable closures at each end. The container is filled with a substance, and when at least some of the substance has been removed, the container is refilled with the substance and inverted. In this way, the user is able to use substantially all of the contents of the container, and is able to use completely the older substance first, because the older substance is at the top of the container after the container is inverted.