Amazing CO2 Extracts What are they? Supercritical carbon dioxide extracts are extremely pure plant extracts, produced from a relatively new and highly efficient extraction process. CO2 extraction produces a superior herbal extract without the use of heat or harmful chemical solvents. The atmospheric gas CO2 (carbon dioxide) becomes a liquid under pressure. Liquid CO2 is a safe and inert solvent that can dissolve and extract natural components found in plant material. The Pr