Yes, Cool Whip does need to be refrigerated. It is a light, fluffy topping that must be kept at a cold temperature to maintain its freshness and texture. When Cool Whip is stored properly in the refrigerator, it can typically last for about two weeks after it has been opened, as long as the container remains sealed and is not contaminated with other food items. If it has not been opened, it can be stored in the refrigerator until the expiration date printed on the container. It is also worth noting that Cool Whip can be frozen for longer storage, although its texture may change slightly once thawed. For more specific storage instructions or to check for any updates, it can be helpful to visit the current web page where more details can be found.