Hi Carocap. Unfortunately, you have a scar that is difficult to deal with. You don't want just anyone to "attempt to fill it". No filler has an FDA indication for that kind of scar - at least on-label. What I have had great luck with, is to use a filler that does have an FDA scar indication - Bellafill (acne scars) to repair these scars. I use the technique of subcision, and carefully use a special needle which acts like a scalpel in order to loosen adhesions below the scar. I then use a biostimulatory filler such as Bellafill or Sculptra to lift the scar even with the skin surface. I do this over 3-4 sessions, using minute quantities of material each time. The results vary with the depth of the original scar, and the amount of underlying adhesions and whether or not the scar has hyper or hypopigmentation.