ReThink uses a CO2 Extraction process to remove the desired minerals, nutrients and vitamins from hemp… a most powerful natural source. CO2 Extraction involves the application of cold temperatures and pressure to extract CBD Oil from the hemp plant material. It is by far the safest and most environmentally friendly method available today. The result yields CBD oil stocked with all the essential cannabinoids and terpenes while eliminating unwanted chemicals and residual solvents. By using CO2 Extraction, ReThink creates a high-quality CBD oil that is safe, clean and nutrient rich.