Cannabis full melt is solventless hash, most often made with ice water, that liquefies almost completely on a heated surface and leaves little to no residue. The name describes a purity grade rather than a strain or a product type. When trichome heads are separated cleanly and dried properly, what remains is resin that melts, bubbles, and vaporizes instead of burning into black ash.
What Makes Hash Full Melt?
Melt is judged by residue. A full melt sample dabbed at low temperature leaves a light, faint stain, while half melt leaves a dark ring and food-grade hash leaves char and plant matter.
Three factors drive that result: trichome maturity, sieve size, and moisture content. Full melt typically comes from the 73 to 120 micron range, where intact, ripe trichome heads collect.
How Is Full Melt Cannabis Made?
Almost all full melt is produced with water, ice, and agitation. No hydrocarbon solvents are involved, which is why it is classed as a solventless concentrate.
- Harvest and freeze fresh flower so trichomes stay intact.
- Agitate the material in ice water to detach trichome heads from plant tissue.
- Strain the slurry through a stack of micron bags, usually 220 down to 25 microns.
- Collect each sieve separately, then freeze dry or air dry the hash.
- Grade the fractions and keep only what passes the residue test.
Full Melt vs Half Melt vs Rosin
Half melt sits one step below full melt: it dabs acceptably but leaves visible residue. Rosin is a different process, where heat and pressure squeeze resin out of hash or flower.
Full melt hash can itself be pressed into rosin. Many producers make full melt first, then process the best fractions into live rosin.
How Do You Test for Full Melt?
Take a small piece on a dab tool and touch it to a nail heated to roughly 450 to 500 F. Watch what is left behind.
- Full melt: amber puddle, faint ring, no plant specks.
- Half melt: dark ring with some charred material.
- Food grade: black residue, harsh vapor, visible plant matter.
Does Full Melt Get You High?
It depends on the cannabinoid profile, not the texture. THC-dominant full melt is potent and psychoactive, while hemp-derived full melt at or below 0.3% delta-9 THC is not intoxicating in the same way.
CBD-rich full melt is increasingly common where hemp is legal. Buyers should expect a full panel lab report covering cannabinoids, terpenes, and contaminants.
How Should You Store Full Melt?
Full melt is sticky, so it clings to parchment and to itself. Store it in a glass jar with a nonstick liner, sealed and kept cold and dark.
Cold storage keeps terpenes from evaporating and slows oxidation. Let the jar reach room temperature before opening to avoid condensation.
How Do You Use Full Melt?
The most common method is a low-temperature dab from a quartz banger. The resin melts and vaporizes rather than combusting, which preserves flavor.
You can also top a bowl or load it into a vaporizer. Avoid direct flame, since high heat destroys terpenes and creates the residue this grade is prized for avoiding.
Is Full Melt Legal in the US?
Legality follows the source material, not the consistency. Hemp-derived full melt with no more than 0.3% delta-9 THC on a dry weight basis is federally legal under the 2018 Farm Bill, while cannabis-derived full melt remains illegal federally and is regulated state by state.
Check your state law before buying and confirm the seller publishes batch-specific lab results.
Why Lab Testing Matters for Full Melt
Solventless does not automatically mean clean. Mold, pesticides, and heavy metals can carry over from the flower into the hash, and potency labels are frequently inaccurate.
Third-party testing confirms cannabinoid content, terpene profile, and contaminant screening. For CBD shoppers, a batch-linked certificate of analysis is the only reliable way to verify what is in the jar.
Frequently Asked Questions
Can you smoke full melt in a joint?
You can, but it burns rather than melts, so you lose the flavor and purity that define the grade. A vaporizer or low-temp dab preserves it better.
Is full melt the same as bubble hash?
Full melt is the top tier of bubble hash. All full melt is bubble hash, but most bubble hash is not full melt.
Does full melt need a special rig?
A quartz banger, a carb cap, and temperature control are enough. No solvents or specialty equipment are required.