I’m a Male who doesn’t have a thick beard or much facial hair. At best, I get a small stubble on my cheeks, where my moustache can grow a bit more. I can easily shave my cheeks without any cream or prep, moustache I’d generally have to soften up the hairs for a good shave.
Generally, I use the razor for a few “shaves” which can last a few weeks. Since there isn’t much hair, it doesn’t dull as easily. I’ll change it out after I feel its getting slightly dull or when I realize that it’s been a while since I last changed it.
Curious as to what others do or if there are things I’m potentially overlooking (e.g. hygienic reasons to change more frequently).
Also - I recently switched to a single blade, straight razor.
I use my electric hair trimmer maybe once a week and then if I want it to be closer I use a manual razor. That blade had probably been in there for at least 6 months. Maybe 2x that. But It isn’t a fair assessment because with a beard and mustache I only need to shave my neck and cheeks. If you want to keep your blade from getting dull, keep it dry and away from water as much as possible. Rusting of the edge will dull it fast. And metal rusts quickly on edges.