I’m 62. I had very thick hair all of my life. But when I get to my 50s it began to thin on the top. By the age of 60 it was very thin, almost bald on the top. I have sent a picture into Chris so you can see my before and after. What can I say? I am delighted. My hair is not fully regrown but I am very very happy. You have to see it to believe it! As far as any downsides go I suppose it is quite a lot of effort to read all the instructions and using the Dermaroller on your scalp is not very nice. However it is not just about regrowing your hair. That of course is the main benefit but I think this is something anyone who is aging should do. It is very good for your hair, your skin and your organs. If you are thinking about giving it a go, I say go for it, you will not regret it.