Eyelash extensions aren’t for everyone. In fact, many people have allergic reactions to eyelash extensions (source). The adhesive glue contains chemicals that you might find irritating. Within a couple of days, your eyelash extensions can become itchy. You might also notice a rash, a burning sensation, and swelling.
Another reason your eyelash extensions are itchy is because you didn’t fully shut your eyes during the procedure. The adhesive fumes may have gotten into your eyes and caused itchiness.
Lastly, itchiness can occur if you don’t care for and clean your eyelash extensions properly and frequently. Your eyelash extensions become a fluffy home for bacteria, oils, and dirt, which can quickly irritate your eyes.
If the pain, itchiness, redness, and swelling doesn’t calm down after 48 hours, see a professional to get proper treatment.