What should I use for acne?

I purchased Proactiv a couple months ago and have been using it according to how its written. I started getting results but then it stopped. Now my skin is freakishly dry and flaky because of it, it also gets pretty irritated. I use moisturizer to fix it but I'm getting sick of the hle. Is there anything people can recommend for me that will give me really good results WITHOUT over drying my skin? Please Help!