Hello, you need someone with a heal skill like the doc (forgot his name) in shrouded hills and probably any herb shop in Arcanum That and maybe a major heal but I would bet my ass on the heal. Anyone thinks Doc's name should be like Holiday? He also was a gunsliger.. Maybe old faithless doc Jonson?
Virgil can heal you, that is if he has that spell already. Gypsies and Herbalist like Gaylin can heal that scar too. Choose Magickal healing.