Olive oil, vegetable glycerin, and MCT oil are used for the oil extraction method. Olive oil CBD extraction is a commonly used extraction method in the hemp industry. The raw hemp plant is first decarboxylated; it is heated up, typically around 248°F for an hour, which activates the CBD constituents. Then, the material is added to the olive oil, and that mixture is heated up to 212°F for at least an hour.