Hi, I Had Some Pimples In One Side Of My

Hi,
I had some pimples in One side of My face, two month before now its clear But some Black Marks are there,
I went doctor yeasterday He suggest Supatret C gel , every day night i am using this Gel.How many days it will take to reduce my Balck spots. and i am useing sunskin gel ...in morning ,
And my Skin having Small small Pores ,can i used this gel continusly the Pores will Reduce?
or Can i take any other Treatment ? and which treatment is help to reduce My Pores
Kindly guide me Please