More specifically, dehydration can be a major cause (and remember that caffeine and alcohol are both dehydrating), as can a high salt intake, points out Sydney Givens, PA-C, founder of Skincare by Sydney. (Hence why you wake up puffy if you’ve had too many chips and margaritas the night before.) A lack of sleep, allergies, and even the weather can also contribute. The good news? There are easy things you can do, both to address the root cause(s) of the issue and to quickly de-puff when swelling does strike. The effect is similar when you drink too much alcohol and/or caffeine. So, if you needed yet another reason to aim for that goal of drinking eight glasses of H2O throughout the day, this is it. RELATED: This Is the Best—and Worst—Sleeping Position for Facial Aging This will be even more effective if you stash your roller in the fridge or freezer, she adds, noting that jade rollers are especially good because the stone retains the cold quite well. One to try: Herbivore Jade De-Puffing Face Roller ($30; sephora.com). Being deliberate with the application can further enhance the benefits. Givens suggests applying three dots to the undereye area and gently massaging it in with your ring finger in sweeping motions. Bonus points if you can find a product that has a built-in metal applicator to help massage it in even more effectively. RELATED: The 15 Best Eye Creams Dermatologists Actually Swear By