I used it for a while when I was in highschool. It worked extremely well for the first few months then I guess my skin just became used to it or maybe they changed the ingredients because after about four or five months I was back to dealing with break outs again. But every persons skin is different. I have a few good friends who swear by proactiv, but I for one am not a huge fan of it.
I actually had a good experience with proactive when I was younger (teenage years). I haven't tried the actual brand now that I'm older (25) but I have done acnefree and it's too drying for my skin now. if you're interested in trying it but don't want to spend the money, I'd recommend getting the generic store brand. almost everywhere has their own (walmart, target, walgreens) and it's only around 10 to 12 dollars.