My doctor has prescribed Zydip Lotion (to apply on white patches, as he has identified it as vitiligo) and Tab Zempred 16 (for 5 days only). Is it safe to use. White patches are developing on both cheeks and are already on wrists, ankles, on the sides of palms, waist, scrotum and penis. He told me that it is to prevent further expansion and after 5 days change the medicine. May I apply Zydip lotion on my head where I have lost hair. please respond. How long I shall have to take medicine to get rid of white patches.