I went to the dermatologist with mild/moderate acne and was prescribed retin a micro. I was keeping under control with epiduo but was looking for a way to control it even more. I was informed that it may get worse before it gets better and have now been on it for 4 months. I have used it every night within the four month but I still have yet to see any improvement and have red marks from the retin a breakouts and scars that I have never experienced before. The initial breakout doesn't seem like it will ever stop. My skin is very tight during the day as well. I am going to continue for another month to see if my skin is just taking a while to respond.