Dry Herb Vaporizers

The conduction variety has the herb sit directly on the heat source. It will heat the cannabis without burning it so that you get all the benefits the herb offers without toxic carcinogens. 

The terpenes and cannabinoids are turned into a gas without the combustion of the plant material. However, the conduction dry herb vaporizer may not heat the plant material as evenly and may use up your weed faster.