Dermal filler is injected into the tear troughs (area underneath the eyes) to fill them in, eliminating the “hollow” look and instantly providing a more youthful and well-rested appearance. Under-eye filler normally takes around 45 minutes, with a small amount of pain. I always use a topical anesthetic and local lidocaine to ease discomfort. While results are immediate and typically last 12 months, bruising is possible within the first week.