Hi, You seem to be having two issues- oily skin pigmentation/black spots To reduce oiliness, use glycolic acid or salicylic acid based face wash like ahaglow, saslik etc followed by a toner(skip using it in winters) then a water based moisturiser. As you have pigmentation issues also, use a good sunscreen. To reduce pigmentation use a good sunscreen, take vitamin c and antioxidant supplements and use a demelanizing cream . Niltan is a mild demelanizing cream and can be used for prolonged periods. However no medication should be used life long. So i would not advocate using niltan lifelong. Hope that answers your query. Take care.