Went to derm and she gave me a prescription and samples for Retin-A gel, I had heard that you should use it every other day so I asked her and she was like "ok, if you want." Anyway, that was odd, I have senstive skin so for all you who use retin A, should I start every 3rd day, every other day? Also, can I use a moisturizer with SPF, will it interfere with the product? I read somewhere you can't use moisutrizer with peptides, is that true? Do you exfoliate the dead skin that is sloughing? Any expriences, thanks.