Face swelling after the hair transplant usually occurs between the 2nd and 7th days after the surgery. Post-inflammatory swelling is generally a secondary reaction to the healing of your scalp skin.To minimize swelling in the forehead or around the eyes, you can apply an ice pack over the eyebrows for 15 minutes every hour, not on the grafts. The swelling is a part of the healing process and will usually disappear within 5-7 days.