HIGH all, Che guevara you dont need 2 cans but I found it helps.
Bullockmush, I dont think there is much loss of thc, Ive read in a book some were
that the resson hash gives you a heavy stone is that the thc brakes down into cbn and cbd. This happens when the trich(whatevers) get broken and air starts to react with it. Hope this helps Peace.
BGK
P.S A WORD OF CAUTION! A GROUP OF STUDENTS WERE EXTRACTING WITH BUTANE IN THERE KITCHEN, AND THE THEMOSTAT ON THE FRIDGE CLICKED ON THE UNIT STARTED AND A SPARK IGNITED THE GAS!!!!!!! SO BEWEAR.