I have combination skin, but it it very extreme. My nose, forehead and cheeks are extremely oily, whilst around my mouth and above my upper lip my skin is extremely dry. I don't know what to do to counter this problem. I use a mild facial cleanser twice a day and use a facial moisturizer once a day on my whole face and twice a day on the areas that are dry, but I am still encountering both problems of extreme oiliness and extreme dryness. I exfoliate the skin in the dry areas until they are red and raw but the dry skin seems to come back after about an hour. What should I do/use?