Osma Alum Shaving Soap takes the very best aspects of alum blocks, which become active when brought into contact with water and skin. Long believed to possess incredible healing powers we now understand it’s an effective antiseptic and antiperspirant that provides a balm like film over skin. Such a seal puts a halt to bleeding and keeps moisture locked in long after the shave. Such moisture is plentifully infused as well, thanks to nourishing Shea butter’s immediate hydrating powers.