Maharani, may be you ought to give a day or two for answers. I don't have a 'proper' regimen at the moment. I have this lightening serum by Clear Essence I bought way back, I'm trying to finish it off. Been using this barely a month so can't tell if it is working but I'm not keen, just want to clear it. Also have an almost finished tube of Retin A that I begun using with Obagi products (these worked) earlier this year but when the Obagi's were exhausted, the Retin A went in hiding for a while and I only begun using it recently. I use a soap called Dudu Osun to give me a clear complexion; can't tell if its working or not as its my first bar but my skin looks smooth and even.