I have deep acne scars on my cheeks and forehead. I've been using at-home chemical peels for years with very minimal results. As a grad student, I obviously can't afford expensive professional treatments so I bought this dermaroller on Amazon. I did my first treatment four weeks ago and its hard to tell since I didn't take any before pictures, but I think my more shallow forehead scars. I did not do a very good job on the treatment because it hurt more than I expected. I did bleed quite a bit which was hard because I get a little faint at the sight of blood :(. I'm doing another treatment today and I plan on doing a more thorough job since I know what to expect now. I'm posting pictures from today and I'll post more in a few weeks. Sorry i only have a crappy phone camera.