If eye bags are caused by dehydration, simply drinking enough water and avoiding salty foods can prevent them. Sunscreen can help the skin retain its elasticity, which will slow down the progress of eye bags. Sleeping with the head raised can help undereye fluids drain.
Product treatments: Once eye bags make their unwelcome appearance, there is little to be done topically to correct them. Applying cool tea bags on the eyes may have a minor leveling effect.