Eyebrow transplantation is a very safe procedure. It is a surface procedure, meaning that no deep structures are penetrated. Given the very vascular nature of the scalp and brow area, infections are exceptionally rare. Some swelling may develop around the eyes for a day or two. There may be some pain or discomfort related to injections to numb the area, but the procedure itself is painless. After the procedure when the anaesthetic wears off, pain and discomfort are minimal.