Went there about a year and a half ago to treat a cold sore on my lower lip. The procedure was painless and quick. I was amazed at how fast it healed. Because I went in right away, it didn't even blister or rupture. The spot was a little dark for a couple of days. 3 days and gone! I just went back again today for another treatment. It has been my first cold sore since my last visit about 17-18 months ago. Laser procedure on the cold sore works!! If you get cold sores, you really have to try it. Dr. Greenhalgh and his staff made me feel at ease.