First ever cold water shave done. P&B Denali, mongoose with feather pro and a sink full of ice cold water. No shower, just cold water face wash and cold flannel.
First things first, lathering with cold water is a pain, pointless and the lather results suck compared to hot water. I'd lather hot and let it cool.
The shave was irritation free but not as close or as efficient as my usual hot water routine. In fact much less irritation, especially on my neck. I think the lack of stubble softening is the reason efficiency was down. Very refreshing though and I'd do it again, especially abroad in hot weather. The cold steel was a nice feeling and easier to feel the blade and angle.