^ Well, I never done it at home. I went to a skin clinic where I had to pay a decent amount of money to get the service. I started last February & finished my skin sessions in July, am very happy with the result as I can see most of the acne marks almost faded & have a toned healthy looking skin than I used to before!
At the present time, I only go for a maintenance session once every month.
I highly recommend it, but I think if you are going to do it alone than seek a professional help before going ahead with it! Good luck