I was looking at the shave milk on the TSD store, I was looking around quickly for any info on how to use it or what the uses are. how is shave milk different from oils for a pre shave or non alcohol based after-shaves? when is it applied? does it go bad? is it like a refridgerate after opening thing? I've also been thinking about tinkering with making a shave soap and if the process wasnt much more complicated giving this a whirl.