OK I don't have acne (anymore) but I had to share this tip with all my cysters. I'm a bit of a hardcore product junkie.. not just for face stuff, but I love buying, testing, and researching products in general. I also work for a magazine and we're always trying stuff out, hence my passion.
Anyway -- I've always had PCOS related acne, and while yes you have to get your hormones in check.. as for the gross skin that's left in the wake of your raging hormones, I have found one line of products that has literally changed my skin. It started when I was at borders looking for reference books for skincare products. I found this amazing book called "don't go to the cosmetics counter without me" or something. It's by this woman who tests thousands of products, lists their ingredients and effectiveness (while recognizing all the different skin types) and such.
A couple years after her book this woman came out with her own cosmetic and skincare line as an answer to her lack of satisfaction with things like proactive, expensive dept. store products, etc.. and though it's kind of under the radar.. i really suggest you check out this book if you love products.. OR if you just want to cut to the chase and buy something for acne or even dull skin, seriously TRY her skincare sets. I have the facewash, lotions, beta hydroxy exfoliator and skin treatment lotion and I never break out anymore, not even with my period. the packaging and website and everything is rather dull and unimpressive.. but when you try these products which have the best of the best, most simple ingredients.. you will be pleased. i have always recommended these to friends and everyone loves them. everything is explained in great detail on the website as well so you will have no problem choosing products. anyway.. check out the website. as I said I no longer need to acne products but I still use her face wash and exfoliant lotions. the skincare sets are the best value but it's all affordable. excellent stuff. had to share this with my cysters!
http://paulaschoice.com/