I'm pretty new to this, and I just got an alum block. I like the stingy feeling (I have usedalcohol since I was a children, I don't feel complete without someburning). After I applied the alum, itmade my face a little red. This wentaway very shortly after I rinsed it off. Is that normal? Also, whenrinsing off the alum, should I be using cold / warm / or hot water? I used cold, because that seemed to make themost sense, but I figured I would ask anyway. Has anybody tried wetting the alum with isopropyl? Would that somehow be detrimental?