Castile Soap, How is This Soap Different From Other Soaps
Castile soap is recorded within the Imports Book of the London port in 1567 and 1568. It's thought that this natural soap descends from the preparation of lye or sodium carbonate from water and plant ashes, then boiled with olive oil rather than animal fats. In effect, they would boil the water with the ashes, then add the oils, and soap would float up where they would scrape them back. This process produced hard white soap that harden as we grow older, while staying white. Creating the first of Jabon de Castilla.
So historically, this organic soap was essential olive oil, lye solution, and water. However nowadays I see a lot of mis-labeled soaps which have other oils inside them. I don't know who makes them rules, but one site stated that once they had 80% Essential olive oil, they could label it as being such. There isn't any governmental or regulatory body in soap making.
Granted, I've chose to make this olive oil only soap, and it does not lather the way in which we are used to. It is referred to as having creamy bubbles, that we suppose is true, but those bubbles are extremely small, it could be called a creamy lather instead. Initially when i first used it, I though something was wrong with the soap, because it took some rubbing to get a small amount of lather, but that's how only essential olive oil soaps lather, or lack there of. It is coconut oil in soaps that induce those nice big bubbles. And because of this, some soap makers add the other oils, for example coconut, so that there will be a lather.
So if you are looking for a natural as you possibly can soap, Castile would be a sensible choice, and as a guide, it might also be unscented.