Rosin is a cannabis extract created by pressing cannabis material between heated plates.

Rosin is basically the essential oil pressed from the source cannabis material. Rosin is a "full-spectrum" extract because it contains all of the cannabinoids and terpenes present in the source cannabis material's essential oils. Rosin can be made from different kinds of source cannabis material, usually flower or hash.

Because rosin contains whatever cannabinoids are present in the source material, hemp extractors create CBD-rich hemp rosin, just like cannabis extractors produce the THC-rich cannabis rosin that is most prevalent.