15/F/Fair skin. About a week ago, I started using 0.1% of retin a every day. Now my skin is peeling very badly. My skin doesn't burn its just redness and peeling. How long will this last? I don't want to stop using the medication because I'm starting to see old spots clear up (though it's making my skin red). I also wear clinique acne foundation everyday. (My dermatologist approved of this makeup)