It's been some time since I've done the research on this, but some of you probably know. So, alum is a mainstay for many of our shave dens. There have been some alum deodorants on the market for a little while now. Some of you use that as your alum for your face. But, if I'm not mistaken, there is an actual difference in the alum on the market for deodorant and the alum we buy for wet shaving. Does anyone know the difference? And, does the difference...uh...make a difference?