My failures and successes in Scar treatments Posted February 16, 2011 No more Profractional or fraxel. Blood and scabbing, even on a small patch creates downtime that I would not go through again. It is possible I might do a couple more subcisions or TCA. The subcision is simple, no real down time and I seem to get good results now. He missed 2 scars last time. Less sure on TCA because it is not clear to me that I will get a good result from last round. If so, yet I perceive room for more improvement, I will probably do TCA also, but only if I decide to try subcision 1 more time.