I know the easiest way to get ride of puffy eyes is to drink water. When the body is well hydrated, there is less chance of water retention that can cause your under-eye area and other parts of your body to swell. So drink at least 8-10 glasses of water each day could be better. Moreover, reducing the amount of salt you eat to reduce water retention in the body is highly suggested as well. Also, avoid caffeinated and carbonated beverages that can be dehydrating.