Buy Essence – Live Resin BRS Online. Essence flower is cured and BHO-extracted from single strain runs, into full-spectrum, high-terpene and uniquely flavorful resin vapes. It is a cannabis concentrate that gets its name from the freshness of the cannabis plant from which it’s made. Unlike the majority of cannabis products, live resin is made from plant material that hasn’t been dried or cured. Capturing the full essence and aroma of living cannabis is the primary goal.