8. Dark Under-Eye Circles and Puffiness
Chronic allergies dilate blood vessels and can cause them to leak, which creates puffiness and that telltale dark purple-blue hue. “Many people don’t even realize they’re suffering from allergies. They come in wanting a professional dermatologic fix because they think it’s too early or late in the season for pollen, or they’ve never had a problem before,” explains Ranella Hirsch, M.D., a Boston dermatologist and past president of the American Society of Cosmetic Dermatology and Aesthetic Surgery.
And because allergens also trigger the release of histamine, a chemical that contributes to the puffiness and can make eyes itchy and runny, you rub your eyes. A lot. Which only makes the swelling and discoloration worse. “By irritating the thin skin around your eyes, you may even create more leaky capillaries,” says Hirsch.