Gum olibanum is the dry exudate obtained from the stems and branches of Boswellia papyrfera. It consists mainly of salts of an acidic arabino-galactan protein complex. Gum olibanum is a greenish-yellow solid in the form o f irregular nodules and fragments which on pressing form a slightly plastic mass. Gum olibanum has a characteristic pleasant odour and bitter taste. It may contain extraneous materials such as sand and pieces of bark. It is used as a fixative for perfumes, in soap Uses manufacture, in folkloric medicine, an incense in holly places and as an insecticide.