Hash oil is a drug gained from cannabis plants. There are different uses of has oil in human life having different dimensions. This oil is producing through a specific part of the cannabis plant which is called "Resin". The usage of this oil without mixing with other products is very toxic for the body because to its high potency.
For the purpose of reducing its potential and toxic effects, mostly it is mixed with tobacco and other ingredients like cannabis products. It came into the market in 1961 for the first time after approval so it not not considered as an ancient drug. For the first time it is approved by the United States Narcotics department.