that is right, just like shitty weed, why not just smoke more ???? senseless actually right. same thing..BHO done right is pure, and that means an isomerization after extraction dudes.
hash bags collect the whole trichomes, made of waxes and stuff, which is not what gets you high, it only displaces o2 in your lungs. and passes along carcinogens to them also.
Pure is pure. keep it clean always.
My tamisium automatically tells me exactly how many tenths of a grams of pure butane I've started with, and is not finished until this exact same amount is purged form the extract. its a no brainer, its the right way, and no medical community will ever accept combusting dried flowers, or dirty extracts, and inhaling it for the release of its medicinal qualities.
Lab grade butane works becuase its evaporating temperatures are well documented, and repeatable, unlike store butane, which may actually contain more than 12 other solvents, that will not evaporate or purge at the same rate, leaving them behind, for the dabber