I was put on differin about 2 years ago and I remember that it didn't do much for my skin back then. However, my dermatologist has put me on it again and it has been 3 weeks. I put it on at night, not morning and I notice that my face looks oily in the morning when I get up. I don't think I would be able to use it during the day. I went straight from Retin-A Micro to Differin so I thought I might be able to skip the initial break out, but this past week seemed like it could have been it. By the way, I am 20, have had mild to sometimes moderate acne for 2 years.