Scarification
Scarification is the process of creating body art with scar tissue.
Scarification usually consists of a series of abrasions, which can be created using sandpaper, power tools, or cuttings. The final result may resemble an inkless tattoo or an abstract design.
It is fairly common in West Africa and New Guinea and facial scarring was a popular practice among the Huns.
When scar tissue is created by burning with a hot metal object, it is called branding.