Hair samples collected from three Incan child mummies has shown that these individuals consumed coca and alcohol prior to their death. In particular,one of the young girls seems to have consumed larger quantities of these substances prior to being sacrificed. Ritual sacrifices were part of Inca culture and it was considered an honor to be selected for this event.
Contents within burial urns, from the site of Teotihuacan, have been identified as pigments, which the researchers suggest would have been used as cosmetics. These would have been used on the deceased as part of a ritual. Interestingly, researchers found that some of the particles and materials used as cosmetics were not local, therefore suggesting long-distance trade.
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