I m using Ranbaxy Exel GN cream on my face. I dont know but once i got black spots and a deep scar on my face and i was adviced this. Using this i found very good result as it lightens all the marks and reduces everything. I dont know whether i m doing it correct or not but i have made a habit of using it daily at night and it has made my skin free of tan and brighten but the problem is that am i doing right . Actually should i use it daily or weekly? Or alternate days? Is it goof for face? Tell me evrything. Its side effect too. As i apply in little amount on my face daily at night if i stop using it makes my skin dull.