I've had mild to moderate acne (no cysts) on my t-zone and the sides of my cheeks every since high school (now 24). When I was a teenager, I never really thought going to the dermatologist was necessary so I tried every OTC product under the sun - Proactiv, Neutrogena, herbal stuff over the internet - you name it, I've probably tried it.
Nothing really worked so once I got to college I finally went to see a dermatologist, who prescribed Duac, which worked almost immediately. Within a month my spots had cleared up. For the first time since I could remember, my face was completely, 100% clear!!
Every so often I'm fooled into thinking my face is now permanently clear, so I stop using Duac, and the spots always come back. Every time I stop, within a few weeks the spots reappear, so I guess I'm stuck with this forever, which is the only negative.
This burns a little bit on the skin, but I've found it goes away within a week or two. BE SURE TO USE MOISTURIZER because your skin will flake if you're not careful! It's quite drying.
My routine is the same in the morning and at night:
1) Wash ace with fresh brand soy face cleanser
2) Apply DUAC
3) Dab on SK II Skin Signature Cream
This product combination has given me the best skin I ever remember having - clear, bright and even.
(I also used a lot of Aveeno face products before I decided to splurge on SK II and I've found it also works very well in combination with the Duac.)