I've been placed on 20mg isotretinoin daily for 2 weeks now. People have told me that my skin will become very dry and I'll need to moisturize it.. though I'm finding that whenever I came home or wake up in the morning and feel my face, I can still see heavy amounts of oil on it, and so moisturizing it is surely counterproductive as a result? My lips however are getting a bit dryer, but nothing major, and my acne has actually worsened over the past 15 days. Should I be worried? Is my dose too low?