What is keef?

Keef, also spelled kief, is the loose, resin-rich powder that falls from dried cannabis buds. It forms mostly from trichomes, the tiny glandular hairs on the flower that hold cannabinoids such as THC and CBD and aromatic terpenes. People collect keef by grinding or sifting cannabis and then use it to top a bowl, roll it into a joint, or press it into hash. Because keef is concentrated plant resin, its cannabinoid content by weight is often higher than the flower it came from.

dust

Keef, kief, and hash: what is the difference?

Keef and kief describe the same material; spelling varies by region and habit. Hash is different. Hash is made by pressing or heating keef until the resin binds into a solid block or slab. Keef is the raw powder; hash is the processed product. In a CBD store, the word keef may also appear on CBD flower trim or CBD shake, so read the label for cannabinoid content and test results.

read more

What keef contains

Keef is not pure THC or pure CBD. It is a mix of trichome heads, plant fragments, and small amounts of leaf and stem. The exact cannabinoid profile depends on the source plant. Hemp-derived keef sold in CBD markets often carries CBD and low THC, while marijuana-derived keef can carry high THC. Lab testing matters because visual appearance cannot tell you potency or confirm that a product meets legal THC limits.

CBD Dust Guide: What Isolate Powder Is and How to Use It

Before you collect keef

  • Use dried cannabis flower, not fresh or damp buds. Moisture can promote mold in collected powder.
  • Work over a clean, dry surface or a trim tray with a screen.
  • Keep a small, clean container with a tight lid nearby.
  • Check your local laws for cannabis possession and home processing.

How to collect keef

  1. Place a fine-mesh screen or trim tray on a flat, stable surface.
  2. Break or grind the dried flower over the screen in small batches.
  3. Rub the flower across the screen with clean hands or a soft brush.
  4. Let the powder fall through the mesh and settle on the collection tray below.
  5. Tilt the tray to gather the keef into one corner.
  6. Scoop the collected keef into a clean, airtight container.
  7. Label the container with the date and the flower source.
  8. Wipe the screen and tools with isopropyl alcohol after each session.

How to use keef

Keef is potent by weight, so start with a small amount. A common approach is to add a pinch to a bowl or to the center of a joint. If you plan to eat keef, decarboxylate it first: heat converts acidic cannabinoids such as THCA and CBDA into their neutral forms. Do not guess at oven temperature or time; use a tested decarboxylation guide and a thermometer. For CBD keef, check the certificate of analysis for CBD and THC content before you dose.

read more

  1. Start with a small pinch, about the size of a grain of rice, for a first trial.
  2. Add the keef to the top of a packed bowl or blend it into ground flower.
  3. Wait at least 15 minutes before adding more when you inhale.
  4. For edibles, decarboxylate the keef first, then mix it into a fat such as butter or oil.
  5. Record the amount and source so you can repeat or adjust the dose.

How to store keef

  • Use a small glass jar with a tight lid.
  • Keep the jar in a cool, dark place.
  • Limit air exposure by filling the jar and closing it completely.
  • Store away from heat, sunlight, and moisture.
  • Check for mold or a changed smell before use.

Safety and legal notes

Keef from marijuana can carry high THC and may cause strong effects, including anxiety, dry mouth, and impaired coordination. Do not drive or operate machinery after use. Hemp-derived keef sold as CBD is not FDA-approved to treat any disease, and state law controls cannabis possession and sale. Buy products with batch-specific lab results, and keep all cannabis products out of reach of children and pets.