Our Crossing powder is made from the leftovers in the bottom of the jar we use to create the crossing oil (another product we sale). Much like the witches and cunningfolk of old we at Thoth try not to waste things, and when making magical oils and potions we should always try and utilise the leftover plant matter once seperated from the oil (see tinctures.)
Most commonly crossing powder is used for hexing and cursing. It can be used as a base for other baneful powders and insenses or simply charged and used on it's own. Ultimately it is a magicaly charged powder which can be used in a multitude of ways and none of them usualy positive. Use your imagination when designing spells made with this product just don't get any of it on yourself in fact, I know many Hoodoo practitioners who will only handle it while wearing gloves.