The skin loses its elasticity and our muscles slacken with age. For the eyelids this results in an accumulation of loose skin which collects as folds in the upper lids and forms deepening creases in the lower lids. At the same time there is slackening of the muscle beneath the skin allowing the fat, which cushions the eyes in their sockets, to protrude forward to give the appearance of bagginess. In some families there is an inherited tendency for bags to develop during early adulthood before any skin changes.