Black Salve  (also known as Casema) is an escharotic substance meaning that when applied directly to the skin, it causes the cells to die – creating a thick black dry clump of necrotic tissue called an “eschar”. This often causes scarring and can potentially cause serious injury and disfigurement. The paste itself is made from a mixture of bloodroot (Sanguinaria canadensis) extract and zinc chloride.

Caution: I personally know of no uses for this salve; approach this treatment with extreme caution.