Hot on the market is CO2 oil, a concentrate made possible by expensive botanical extractors that use pressure and carbon dioxide to separate plant material. This method, called supercritical fluid extraction, is one of the most effective ways of reducing cannabis to its essential compounds. The amber oil it produces can be vaporized in a variety of ways, one of the most popular being portable vaporizer pens. Among the industry’s best sellers are disposable cartridges containing CO2 oil and a medical grade solvent called polypropylene glycol which gives the oil its liquid consistency.

Under the umbrella of cannabis concentrates falls any product procured through an extraction process. Solvents (e.g., butane, CO2, ethanol) strip compounds from the cannabis plant, leaving behind a product with cannabinoids packed in every drop. Some types of extracts test as high as 80% in THC, while others rich in non-psychoactive compounds like CBD deliver an altogether “high-less” experience.