“Olive Oil” is the oil extracted from the fruit of olive trees. Pure Olive Oil is the classic olive oil, regular olive oil, or more simply “olive oil”, would be those oils of the olive fruit that do not qualify for the virgin designation due to acidity levels and other factors. Any Olive Oil that does not pass the virgin standards in chemical and organoleptic quality is refined with heat and/or chemicals to remove undesirable odors and flavors. The resulting product is bland, and almost colorless oil that is blended with a small amount of virgin olive oil to add just enough olive oil character.
Pure grade olive oil contains a larger proportion of unsaponifiable ingredients. This slightly affects its SAP value and imparts a greenish color to the oil and to soaps made with it. Some prefer pure grade oil for soapmaking.