Funny, I just went thru this. My daughter's soccer team had an out of town tournament over the weekend. I didn't bother with the shave kit. Two things I noticed...one was that the itching from sebhorreic dermatitis comes back quickly and the really good shave after skipping a couple of days (first thing I did after unpacking at home....shower and clean up the dome).
Man, it's good to be sly!