CO2 oil is made from pressurized supercritical fluid. It is a natural chemical that leaves no residue, making CO2 oils pure concentrates that is a good option for people looking for cannabis concentrates while maintaining levels high of terpenes.
To make CO2 oil, concentrate manufacturers manipulate temperature and pressure to turn CO2 into liquid. The cannabis plant material is then soaked in the liquid, which chemically removes cannabinoids and terpenes from the plant material.
Once this process is complete, the plant material is removed from the solution. From there, the concentrate manufacturer manipulates the pressure and temperature again to transform the CO2 into gas. When the gas evaporates, it leaves behind a concentrated substance composed almost entirely of cannabinoids and terpenes.