Human Branding
As with livestock, a mark burned into the skin for identification purposes. Human branding comes up routinely in slavery and crime and punishment so we will make some notes.
Freeze branding aka CryoBranding and the resulting brands, trichoglyphs, is a technique involving a cryogenic coolant instead of heat to produce permanent marks on a variety of animals
The coolant is used to lower the temperature of a branding iron such that its application to shaved skin will permanently alter hair follicles. T