Black tea is chock-full of astringent compounds called tannins that can help deflate and tighten the bags under your eyes. (Not to mention black tea is associated with a lower risk of type 2 diabetes.) Activate the tannins in a tea bag by dipping in a cup of hot water for several minutes. Cool in the fridge, then apply the damp bag as a compress to the closed eye for 10 minutes.
It’s been used for thousands of years in Asian medicine to treat stomachaches, diarrhea, and nausea, and studies show that it works for nausea and vomiting. There’s some evidence that it might help with menstrual cramps, too. But it’s not necessarily good for everyone. Some people get tummy trouble, heartburn, diarrhea, and gas because of it, and it may affect how some medications work. So talk to your doctor, and use it with care.