It was once thought that CO2 extraction was the best extraction method. It has now been proven that Ethanol is comparable if not a better method of extraction. It is now believed that more of the vital components of the plant in higher concentrations utilizing pharmaceutical-grade ethanol. Once the Full Spectrum CBD oil has been extracted, it is then gently reduced by the use of chromatography to remove any and all traces of ethanol, thus producing superior Full Spectrum CBD. Ethanol extraction is vastly becoming the extraction method of choice.