Give it some time
I started using Epiduo this August after fighting my acne for about 5 years. It was the typical teenage acne, and when I look back at pictures I feel bad because I didn't realize how bad my skin actually was. It got better with the years, but never really completely clear which bugged me.
When I got a huge breakout in August I felt that I'd had enough (as so many times before) and contacted the doctor. He prescribed me Epiduo, and I was a little doubtful because of the fact that it was a topical. At this point I never thought a topical could do something about preventing pimples, only treat the ones that are already on the surface. But, I started using it, and spent hours on looking on reviews of it. In many reviews it said to give it a good 3-4 months, and I remember feeling inpatient, I couldn't wait that long? After the first month there was really no change. I got dry, but used masks and moisturizers to help that. Month 2, still no change. I started losing hope of the product but remembered the reviews that told me to keep using it. Today, three months later, my skin is clear almost all the time. The times that I have gotten a pimple is when I stopped using Epiduo because my skin was clear, which shows that you have to be persistent. By now, I use Epiduo about every other night and it still keeps my skin good.
As a summary - try Epiduo because it works! Be persistent and don't give up even after one to two months.
The dryness will also disappear after a while, I now that can be a struggle. I was bright red for the first few weeks haha.
Good Luck dear acne-friends!