Oiling

 Even in ancient times rawhide in the development greased or similar substances. This prevented hardening, actinic skin later. This operation has been so effective and at the same time simple, that has become one of the key moments in the treatment of skin virtually all nations. Even Homer in his "Iliad" describes the process of making a skin for the shield of Ajax when the "imbued with fatness" rawhide stretched beyond its ends until all the fat drain. Slavs at fatliquoring used horse fat, nomadic Asians - mutton. Japanese skin treated rapeseed oil, the Caucasus - oil in the North - the liver and egg yolks. Very interesting way of fattening, which is obtained thanks to the famous Eskimo deer "suede": bahtarmu scraping, followed by skin rubbed with a mixture of the brain, egg yolk, and chewed the liver (saliva - a great splitter proteins). After this, the skins folded, cleaned in a bag and used for 1-2 weeks instead of pillows.