Amateur chemists be warned: making marijuana wax is not a kitchen-friendly (or, for that matter, user-friendly) activity. The marijuana is placed into a long tube or pipe, which is then hit with a rush of highly flammable butane—yes, like lighter fluid. The butane is used to extract THC, marijuana's active ingredient, in a hardened, extremely potent form that resembles wax, hence the name. For anyone familiar with how hash is made, it's a similar, yet more dangerous, process. More on that later.