Cannabis concentrate in the context of Supercritical carbon dioxide

Hashish (/həˈʃiːʃ/ ; from Arabic ḥašiš حشيش 'hay'), usually abbreviated as hash, is a compressed form of resin (trichomes) derived from the Cannabis flowers. As a psychoactive substance, it is consumed plain or mixed with tobacco. It has a long history of use in countries such as Afghanistan, India, Pakistan, Iran, Iraq, Lebanon, Morocco, Nepal and Egypt.

Hashish consumption is also popular in Europe. In the United States, dried flowers or concentrates are more popular, and hash has seen a relative decrease in popularity following changes in laws that have indirectly allowed for the development and increased availability of cannabis extracts that are more potent than traditional hashish, although regional differences in product preferences exist. Like many recreational drugs, multiple synonyms and alternative names for hashish exist, and vary greatly depending on the country and native language.

Tincture of cannabis, sometimes known as green dragon, is an alcoholic cannabis concentrate. The solubility of THC in ethanol is greater than 1 g/mL.

According to the European Medicines Agency (EMA) cannabis tinctures (tincturea) are a type of liquid cannabis extract obtained using ethanol, water, glycerol, propylene glycol and fatty oils as extraction solvents, depending on the type of tincture (and also on the solvent used) it can have a specific mass/volume ratio or a specific therapeutic agents content.

Phytol (florasol, phytosol) is an acyclic hydrogenated diterpene alcohol that is used as a precursor for the manufacture of synthetic forms of vitamin E and vitamin K1, as well as in the fragrance industry. Its other commercial uses include cosmetics, shampoos, toilet soaps, and detergents, as well as in some cannabis distillates as a diluent or for flavoring. It smells grassy and dominates the aroma of certain green teas.

Its worldwide use has been estimated to be approximately 0.1–1.0 metric tons per year.