There is no such medicine which can turn brown into white... But there are few medicine available which can increase ur fairness. But first of all I want to assess your degree of fairness and other vital things... So contact me in online chat section to discuss and I request u to don't use use self medication as many fairness skin contains steroid which can damage ur skin

It depends on the tone and texture of skin....Send photos, of the affected area for accurate diagnosis and treatment.