question: Hello doctor,I completed my acne treatment one year ago and my skin is clear after some period of time. My scalp and face get excessively oily. So I went to another dermatologist and he says that the treatment is under weight. My weight is 55 kg. I take Isotretinoin 20 mg for four months, 10 mg for four months. So please advise me who is correct for me to treat my skin.