Usually a retinoid is presribed to help get rid of dark markes and keep pores clear. You usually avoid the IB you get with a retinoid because your pores are already clear.

retinoids often prescribed:

tazarac

retin a

differin

Some people recommend you just leave your face alone but from my experiences with accutane, acne may come back so why not be preventative with it.

BTW - at what point in your course did you stop getting new acne. I am almost 3 months in and getting bad acne-very disappointed so far.