Kief

Kief is a powdery, concentrated cannabis product.  Which refers to the pure and clean collection of loose cannabis trichomes (resin glands) of the cannabis plant. It is highly potent, with THC levels that can exceed 50% or more, and is known for its strong effects.
 
Kief is versatile and can be used by sprinkling it on flower, pressing it into hash, adding it to edibles, or rolling it into joints.