From when I walk into the bathroom till when I walk out is about twenty minutes. That's the prep, the shave and the finish. And I am not in a race.
To headshave and shower, I allocate half an hour from the time I enter the bathroom to the time I leave it. Rarely takes longer or shorter than that. If I do try to rush it, that is when I nick it.
Tony
my shower "routine" usually takes 15-20 minutes, and that includes letting my head soak under the hot water for a few minutes to soften the hair, and everything else. so from when i touch the blade to my head til i make the last stroke, 10-13 minutes, i guess.
Been timing myself lately b/c of this thread.
About 5 to 8 minutes.
Timed myself today. Head and face 12 minutes.