The hash oil collected from pipe resin is not really hash oil; some call this process reclaiming but done with a pipe that is used to smoke just herb the product from it is not so good, and full of carcinogens not present in real hash oil. How ever if this process is done with a pipe which is used to smoke nothing but hash oil or bubble hash, the reclaiming process can yield almost pure hash oil, with almost no impurities.

Hash is a claiming or collection and cleaning of tricomes. Tricomes are the little crystal looking glitter specs on well grown bud. tricomes are pure THC, cbd, etc. where as the bud has allot of other things in it. These other things or chemicals can be harmful when burned and inhaled, however much less harmful than the chemical make up of tobacco when smoked.

Hash oil is made from a extraction processes in which a solvent or gas, such as butane or alcohol even liquid oxygen is used to extract the tricomes from ground bud or trim. in the extraction a filter is used to clean impurities or anything that is not a tricomes.

don't smoke pipe resin it is not so good for you, on the other hand vaporizer resin and resin from a hash pipe is not so bad.