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I have gone through your case. The pigmentation which you are having will take at least 2 to 3 months to recover (attachment removed to protect patient identity). Please mix Azelaic acid and Vitamin C cream in equal amount and apply on lesion at night for two hours only. Do not rub on your whole face. Take both creams in a small amount. Each one about the size of a pea will be enough for the whole face.