Keefer or Kief refers to the resinous trichomes of cannabis that may accumulate in containers or be sifted from loose, dry cannabis flower with a mesh screen or sieve. Kief contains a much higher concentration of psychoactive cannabinoids, such as THC. This product is fragrant and easily manipulated. It is strong and easy to use on top of bud or with appropriate vaporizers. Good for intense pain, anxiety, nausea, and insomnia.