 In ancient Egypt, embalming was considered a sacred act, and knowledge of the process was the preserve of very few individuals. Most secrets of this act were probably passed on orally from one embalmer to the other. And according to a statement released by the University of Copenhagen, Sophie Shirt and her colleagues have found evidence of an ancient Egyptian embalming process in the papyrus Luvra Kalberg, a 3,500-year-old medical text dated to 1450 BC. Most of the volume describes herbal medicines and skin illnesses, also contains recipes for ungoints, the uses of different types of bandages and advanced embalming instructions, including a procedure for preserving the face of the deceased. Researchers say the text describes how to coat a piece of red linen with a liquid made from aromatic antibacterial plants and binders and apply it to the face. The text also instructs the embalmers to work on the mummy every fourth day, masking the intervals with a ritual procession for 17 intervals. The body was covered with cloth and straw and fused with aromatics on other days during embalming period. Several mummies from this period have been found with cloths and resins over their faces. The papyrus Luvra Kalberg, so-called because one half of the papyrus belongs to the Luvra Museum in Paris and her apart belongs to the University of Copenhagen's papyrus Kalberg collection. The two parts of the papyrus originally belong to two private collectors and several sections of it are still missing. Based on the paleography, that is, the sign forms, the six-meter-long papyrus is dated to approximately 1450 BC, which means that it predates the only two other examples of embalming texts by more than 1,000 years. The bulk of the papyrus, which is the second-longest medical papyrus surviving from ancient Egypt, deals with herbal medicine and skin illnesses, specifically it contains the earliest known herbal treatise which provides descriptions for the appearance, habitat, ussies and religious significance of a divine plant and its seed as well as a lengthy treatise on swellings of the skin which are seen as illnesses sent forth by the loner god Konosu.