Uh ya interesting... On that note I often lather up my face and then wash it off with cold water, a habit I developed with Proraso that I now do regardless of menthol or not. One time I used my alum block first before that last pass and it made some pasty stuff all over my face. It was kinda gross and the brush had to be washed a few times. It wasn't really hard to get off my face, just some additional rubbing.

You should try mixing the stuff again and see if it would bond some objects. Could be a poor shaver's crazy glue.