Store-bought ice cream should be stored no longer than 1 month in its original container because its container is not moisture-vapor resistant. If stored longer than 1 month, it loses volume and the surface becomes waxy and sticky. The flavor may also change. If ice cream must be stored longer, over-wrap the container with freezer paper or plastic wrap.
Homemade ice cream is difficult to store for any length of time because it becomes grainy. (Commercial producers of ice cream add extra milk solids and/or gelatin to their products to prevent this.)
This document was extracted from "So Easy to Preserve", 5th ed. 2006. Bulletin 989, Cooperative Extension Service, The University of Georgia, Athens. Revised by Elizabeth L. Andress. Ph.D. and Judy A. Harrison, Ph.D., Extension Foods Specialists.