I use an alum block on a regular basis. I use it to judge the quality of my shave. If my technique and lather is not on point I get sting. At the same time, it took me a bit to find a razor and blade combo that would let me do three passes with extra strokes to clean up the areas I ALWAYS miss and not give me feedback from the alum.
If you are averse to using the alum block, pick up some alcohol free Witch Hazel.
If you are averse to using the alum block, pick up some alcohol free Witch Hazel.