In most cases, puffy eyes occur when your blood circulation is bad. Besides, if you drink a bottle of water before you go to bed, then you would get puffy eyes tomorrow. In this case, you can recover very soon if you take vitamin B then massage your eyes. For the bad blood circulation, you have to do more. Avoid drinking water before sleeping. Then massage your eyes with tea tree oil twice a day.
Well, yes, you can just try hot water to treat puffy eyes. So we just need to try some ways to treat your swelling part. And you can just have some hot water on the soft cloth, and then put it on your eyes. And then just repeat it for many times, and then it will be fine. By the way, over consumption of salt, this causes fluid retention, allergies or infections that can cause inflammation, and then leads to puffy eyes.
Personally, I do not agree that hot water can help reduce puffy eyes. On the contrary, one should avoid hot water if he got puffy eyes. Because of the relatively high temperature, hot water can encourage baggy or puffy eyes, so the condition of puffy eyes can be more serious. So just avoid hot water.