Swollen eyelids after wearing false eyelashes can be due to an allergic reaction to the lash adhesive, the eyelash extensions themselves, or from the irritation caused by the application process. Symptoms of an allergic reaction may include redness, swelling, itching, and burning sensations around the eyes.
If you suspect an allergic reaction, it's important to remove the eyelash extensions and consult with a doctor right away. To prevent future swelling or reactions, consider doing a patch test with the adhesive before getting eyelash extensions or using hypoallergenic eyelash extension materials. Lastly, ensure that the eyelash extensions are applied by a trained professional to avoid any unnecessary irritation during the application process.