Alexo, Soap is no more than "emulsified" oils caused by the reaction between an acid (oils) and a base (lye). (Now you scientifically minded guys, bear with me as I try to explain in layman's terms) What we soap makers often do is to include a little extra oil in our formula that does react to the lye and it left behind to make the soap milder. This extra oil is referred to as "superfatting" and that actually can contribute to the slip or lubrication of the skin and beard hair especially if done in a large enough amounts. When you see a label with say "Sodium Stearate" and "Stearic Acid" both included then the Stearic acid acts in the same way as the oil you mention. The "Sodium Stearate" is a sodium salt of Stearic Acid or better called a Sodium "soap" of Stearic Acid. There are Shaving soaps on the market that do this. (I did my best, if someone wishes to add to it or explain it differently, feel free!) Also, some soapmakers do sell bricks of soap. I don't happen to because uncut logs are not able to dry out and cure the same way as cut bars can and thereby won't last as long in usage. I hope I have answered you questions!