Hai Doctor..this Is Xxxxx And Ibam Of 24 Years Lady

hai doctor..this is xxxxx and ibam of 24 years lady i am using panderm plus for the past 3 months... and i have got changes in my colour...and i became fair than before.. now i come to know that if i stop it my skin become dark.. i need to avoid the darkness and also i want to stop that cream... please help me on this...i need to stop it without any side affects.. wat to for that