Originally Posted by
MickR
The colder wateveritable the capillaries, so if you do nick yourself, if it's small enough you'll not know about it until you apply some aftershave, if it is a bit of a bleeder, the splash of cold water to rinse off helps shut it down. If you really screw up you'll need the styptic...Or possibly a paramedic...Depending on the level of stupidity involved I suppose :).
I cold water shave all the time...But I'm also lazy, so that might have something to do with it. ;)
Mick