You may not think it is necessary, but many people have had fantastic results. I wasn't quite ready for a full surgery and wanted to see what this would do. The first thing I noticed was less and less hair falling out in the shower! So I personally feel that it does work to stabilize the existing hair. The growth of the dormant hair is coming through nicely now. I had this done in May of 2012. I realize that this is still a very new procedure, but I was looking for a more holistic way to go to re-grow my hair.