As with natural products, SuperCritical CO2 extracts the essential oils more efficiently than petroleum-based solvents, but, maybe more important upon returning to an ambient state, the CO2 becomes a gas, leaving no residue. The flavor or fragrance is in its unadulterated state. There is no solvent taste or smell. At Zynora, we’re confident that our CO2 extraction systems are the best oil extraction products above all others.