Is it common, if one gets razor burn/irritation, for it to occur several hours after a shave? When I get irritation (and I can generally figure out what I did to get it) it usually happens starting about noon to 4 pm, when I generally shave about 8 am. My face and neck feel great right after, and for a few hours after, every shave (and often-times all day). I'm just curious about others' experience with timing of razor burn/irritation. And, here's to everyone NEVER getting it at all!