What is the best kind of acne medicine to use while on accutane?

I have been on accutane for 4 months now and still havent found my "perfect" face wash as to say. I dont think I need anything light because the only side effects I have are dry mouth and nose. Im taking 4omg 2 times a day. I dont have active acne, just some red scarring that has lighten up a lot since ive been on this. Just looking for something that help with scarring and also keeping the acne away. I dont have any and would like to keep it that way and dont want the acne to return.

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