I've been rolling for over 2 years and have had great results. Just stick with it, roll every 4-6 weeks. I usually wait 6 weeks..sometimes longer if I have a breakout
The wait is hard but worth it.
I did a ton of research before I started and read that if you roll more often (with a 1mm-2mm roller) that not only are you not giving your skin time to form new collagen but you could also be causing scar tissue to form. I personally wouldn't go past a 1.5mm roller. 2mm could damage your skin unless you do it properly. I wouldn't take that chance. Some people on here use the 2mm and haven't had any problems though.
Apply Vitamin A after you roll (and after you rinse your face) and then wait until the second day or so to apply vitamin c. I wait a day or so because it burns like hell. That can't be good, right? I usually don't apply vitamin E until a few days later in cream form. I just read (on a doctor site somewhere but don't remember where) that vitamin E could actually impede healing. It's a new study that came out or something.
When you roll, make sure it's hard enough to cause some bleeding. Dr. Fernandes (inventor of dermarolling) says your skin has to bleed in order for it to work. I get lots of pinprick bleeding and it's worked for me. I don't get all bloody like some of those pics I've seen. lol
Always sanitize your roller before and after every roll and just to be safe sanitize inbetween rolls. Better safe than sorry.
Check needles before you roll. Even if 1 is bent, it will drag across your face and could scar.
While rolling, lift your roller every time you change directions. That will help avoid trackmarks AND you won't be puncturing the same spot over and over again.
Never roll over active acne. That will spread the bacteria and make things worse.
Once the skin grows in, I would recommend getting microdermabrasion to smooth it out. I had to do that. I had a lot of icepick scarring so when my skin grew in it was so bumpy. My dermatologist recommended Micro so I got it done and it helped smooth my skin out. I need to go back again because of the new skin I have (problem I have is after my scars have filled in I get new cysts and new scars. Totally sucks. )