Live resin isn’t a cannabis extract you can make at home. It takes specialized equipment and a great deal of expertise, which is why live resin products tend to be on the expensive side. As with some other concentrates, live resin is extracted using hydrocarbon solvents. However, in live resin production, the process must be timed carefully and tightly controlled.
First, manufacturers harvest the flower and quickly freeze it at subcritical temperatures. Terpene content drops even before heat is applied. The longer you wait after harvesting, the more terpenes will be lost.
The flower can remain frozen for a maximum of 36 hours. At this point, it is removed from the freezer, and extraction begins. A blend of butane and propane is applied to the flower. Depending on the manufacturer, the solvent can contain varying ratios of these chemicals. A higher propane content preserves the most terpenes.
Heat must be minimized at every stage. Keeping the solvent chilled also helps to reduce water solubility—and the less solubility, the better.
After the flower has been washed with the solvent in a closed-loop extractor, heat is applied to evaporate leftover butane and propane. The temperature used is lower than that used in similar processes for other concentrates. Finally, you’re left with an extract that can be incorporated into a variety of products+