Afraid of PIE after treatment

This purge is whooping me. I’m on day 20. A lot of my CCs have come to the surface, and sebaceous filaments/blackheads are popping out of my nose, chin, back, and chest which feels like sandpaper. I know this is supposed to happen and I’ve accepted that I’m gonna look like this for a while. What I’m concerned with though is all of the PIE I’ll have once the purge is finished because I am very very prone to it. Will it heal along with my acne or will I have to take steps once I finish treatment to heal it separately? Before I started accutane I was trying to clear existing PIE and I think 20% azelaic acid caused a really bad breakout. I had been using tret and 10% TO azaelic acid before starting the 20% dermatica brand. So now I’m afraid of ever using that again.. lol. How did you clear your PIE afterwards or is it something that went away while you were still on accutane? TIA!