I have indented (atrophic) scar in my upper lip area for past one year. The appearance of the scar is similar to the chicken pox scar. I have taken 6-7 sittings of microdermabrasion but it hasn't helped much. Really want to know what can I do to get rid of it

My niece has a very bad indented facial scar lessened by having a filler injected every 6 or 7 months.