i am 28 yr old girl.i have fair skin and now i have developed some kind of hyperpigmentation billateraly on my face for which doctor prescribed ointment Depiwhite.few weeks after the treatments the patches completely vanished but once i stop the treatment it appears again now he has put me on ointment clearex{kojic acid with vitC} for maintenance.Please let me know whether i am on the right treatment i really want to get rid of this completely