It worked great on me (although I forget how long that took) and then abruptly stopped working after about a year. I've read that isn't uncommon.
I think my skin was worse after that, but it's possible it just felt that way because I thought I was in the clear, so to speak, and it's also possible it was just going to be an exceptionally bad time for my skin anyway, for some reason.
I've had terrific results with the
acne.org regimen, which I've been using for a couple of years. I even got lazy and barely did it during my recent vacation, actually, I was lazy enough to not even wash my face many days (it was too hot to go out much), and my skin hardly broke out at all. I don't know if the regimen actually fixed my skin, or if I simply was having a mid-thirties adult acne phase that has since passed.