Great Pebble,
Good question, I wouldn't even carry a shaving kit in my Survival kit, I have a beard but need to clean up 'the lines' when I'm out on business trips.
I always try to use the smallest (cary on) suitcase and when I start packing my travel kit which is a small bag with mesh front I get confronted with large heavy glass aftershave bottle, deodorant, super dooper big razor etc.
So I develloped a small nessecities travel kit using small plastic containers for soap, hairwash, mouthwater, body/hand cream, I use a crystal deodorant.
I also use a small bottle with shaving oil that works extremely nice with just 3 drops and I would love a small razor which holds spare heads without them lying loose in the kit bag but protected and one that isn't taking up a lot of space.
I confess I also carry an foldable toothbrush and have a small tube of toothpaste.
I'm talking business travel survival here not a Survival kit.
But what I wrote also applies to a truckload of other devices we carry/use, why would we otherwise have mobile phones that are so tiny that I almost need a pencil to press the buttons, so I use pre-programmed voice commands. Photo camera's, shortwave travel radios, video camera's, mp3 players etc. is the same thing.
Everything gets smaller and people buy smaller not bigger
Cheers,
Bagheera