What's actually in the oil.

The THC number

The big percentage on the package is the oil's THC content by weight. A cartridge labeled 78% THC means roughly 78 of every 100 milligrams of oil is THC. It is a measure of concentration, nothing more.

What the number does not tell you: the terpene content, when the oil was made, how the oil was made, or anything about what your experience will be. A higher number is not a higher grade — it is just a more concentrated oil. Two cartridges at the same percentage can be made in completely different ways from completely different plants.

If you want the full anatomy of a cannabis label — batch variance, lab math, the questions worth asking — our guide to reading the whole label covers it.

Distillate: refined to a single note

Distillation is a refining process. Cannabis oil is heated until its compounds vaporize at different temperatures, and the THC is separated out and collected. What remains is a very high-THC, nearly flavorless oil — the plant's original aroma compounds largely don't survive the trip.

Because distillate comes out of the process stripped of character, terpenes are usually added back in afterward — sometimes from cannabis, sometimes from other botanical sources — to give it flavor and aroma. When you see a cartridge with a fruit or dessert name and a very high THC number, distillate is the usual method behind it.

That is a description of the method, not a verdict. Refining is a choice about what to keep and what to remove.

Live resin: frozen fresh, extracted with hydrocarbons

Live resin starts with fresh-frozen plant material — flower frozen immediately after harvest, never dried or cured. That frozen material is then extracted, typically with hydrocarbon solvents like butane or propane, which are purged out of the finished oil.

Because the plant never goes through drying, more of its original aromatic compounds survive into the extract. The method is defined by the starting material (fresh-frozen) and the solvent (hydrocarbon). Nothing in that description ranks it above or below any other method — it is simply a different route from plant to oil.

Live rosin: heat, pressure, no solvents

Live rosin also starts with fresh-frozen material, but the extraction is mechanical: the plant is pressed between heated plates, and pressure squeezes the oil out. No chemical solvents are used at any step.

Heat plus pressure plus fresh-frozen plant — that is the entire method. Like the others, it tells you how the oil was made. It does not tell you it is better, smoother, or cleaner. Solventless is a fact about the process, not a quality award.

Cannabis-derived vs. added terpenes

Labels use a few different phrases for where the flavor comes from, and they mean different things. 'Cannabis-derived terpenes' means the terpenes were separated out of cannabis material. 'Botanical terpenes' means they came from other plants — lavender, citrus peel, pine, and so on — because terpenes occur across the plant kingdom, not just in cannabis.

Some labels say nothing at all about terpene source, and some list 'natural flavors.' None of these phrases is a quality claim. They are sourcing statements: where the aroma compounds came from. If the source matters to you, the label is where you check — and if the label is silent, that silence is also information.

Check the dates

Two small pieces of print matter more than the flavor name: the batch (or lot) number and the test date. The batch number ties your specific cartridge to its lab result — you will need it for the next article's safety checks. The test date tells you when the oil was analyzed.

Oil does not improve with age. A test date from two years ago tells you the cartridge has been sitting around, and it tells you the lab result describes the oil as it was, not necessarily as it is.

An honest close

Distillate, live resin, live rosin: three methods, three routes from plant to oil. The method tells you how it was made — refined, frozen-then-hydrocarbon, pressed with heat. It never tells you which one you will prefer, because preference was never the method's job to decide. Read the words for what they are: process notes, not promises.

Cannascenti is an education reference, not medical advice. Cannabis laws vary by state and country — buy only where it is legal, and only from licensed sellers.