Quick Pick
Choose live rosin if you want a concentrate made without solvents. Choose live resin if you want more terpenes for each dollar. Both start with fresh frozen flower. Both need a lab test before you buy.
How Each One Is Made
Live rosin
Growers freeze the flower at harvest. The material goes into ice water and gets agitated. Trichome heads break off and sink. The result is bubble hash. A press then applies heat and pressure to that hash. Plate temperatures run from 150 F to 220 F. No solvent touches the plant. Yields land lower than solvent methods, so price per gram runs higher.
Live resin
Growers freeze the flower here too. An extractor runs a solvent through it: butane, propane, or CO2. The solvent strips cannabinoids and terpenes from the plant. A vacuum purge removes the solvent. State labs test for leftover solvent. Limits differ by state. Hydrocarbon rigs cost less than CO2 rigs.
Rosin vs Resin: A Comparison Review for CBD Users
Head to Head
- Solvent: rosin uses none. Resin uses hydrocarbon or CO2.
- Terpenes: live resin holds more monoterpenes. Rosin loses some volatiles at press temperatures above 200 F.
- Yield: resin pulls more from the same weight of flower. Rosin pulls less.
- Price: rosin costs more per gram. Resin costs less.
- THC cap for hemp: 0.3% on a dry weight basis under the 2018 Farm Bill.
- Lab tests: ask for cannabinoid potency, terpene profile, residual solvents, pesticides, heavy metals, and microbials.
Options
Best for flavor
Live resin from fresh frozen hemp. Sub-zero extraction keeps volatile terpenes intact. Look for a COA with a terpene panel that lists numbers, not just names.
Best for solvent-free buyers
Live rosin pressed from ice water hash. Read the COA anyway. Rosin needs pesticide and heavy metal tests because the plant carries those compounds in.
Best for budget
Cured resin. Cured flower costs less than fresh frozen. Terpene levels drop. Price drops with them.
What to Check on the COA
Match the batch number on the jar to the batch number on the lab report. Check the test date. A COA older than 12 months tells you little about the jar in your hand. For CBD, the FDA has approved one drug, Epidiolex. The agency states that CBD added to food and dietary supplements is not approved for interstate commerce.