Closed-Loop Extraction

The process of closed-loop extraction begins when raw cannabis flower is sprayed with a pressurized solvent (usually butane or propane) which separates the cannabinoid and resin-producing trichomes from the plant. Afterward, what’s left is a layer of sticky resin, which is then purged, dried, and processed into the desired form of concentrate, such as live resin, wax, or shatter.

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