I’ve heard a lot of complaints from guys when their wives use their razors that it dulls the razor faster.
My unhusband and I have never even used the same * type * razor so that’s never been a problem. What IS a problem is when I used my razor to shave the hair on the back of my neck and THEN use it to shave my legs. I SWEAR that it seems duller than it had been. Is this just my imagination and for that matter the men who don’t like their wives’ legs being shaved with the implement they use for their faces, does it dull the blade??
Thanks ahead of time!
If it makes a difference, I doubt it’d be so immediate as to be noticeable in the course of one shaving (the back of the neck) to the next (the legs). It could be the feeling you get from the razor on the back of your neck (the neck is more sensitive than the legs), and when you start on the legs, it could be just the difference in nerve sensitivity in the two regions.
Try this as an experiment… try shaving your legs first, then the neck.
A razor’s edge is only “razor sharp” for about the first 10 to 20 passes. That sharpness comes from the fact that the edge of the razor is composed of a 1-molecule layer, or edge, of steel molecules. After about 10 to 20 passes, these are scraped off by the hair and skin, leaving the next thickest layer, which is 2 molecules, which are then scraped off by the hair and skin… And so it goes, until the cutting edge is completely worn off. If it’s the kind of razor that you can sharpen, you grind it on a whetstone and hone it on a strop, which removes steel molecules in a certain pattern, giving you back your “razor’s edge”.
It doesn’t matter what kind of hair it is, whether it’s leg hair or beard hair or neck hair. What does matter is the number of strokes, because even though neck hair may be softer and thinner than leg hair, the skin itself is causing abrasion on the cutting edge, pulling off those molecules with every stroke.
You can feel the difference between a brand-new razor blade and one that’s been used even a few times, if you’re using it on sensitive skin like the back of your neck. A brand-new razor blade will drag across the skin differently, and I think you can tell.
I would say, use the razor on the most important part first, the part where precision and delicacy is required, which I would say is your neck. Then you can scrape away at your legs all you want. A dull razor is more likely to cut you, because when you see that it’s not taking the hair off like it should, you press down harder and then it slides sideways on the skin and–oopsie! You’d probably rather have this happen on your leg than on your neck. 
So, yeah, men don’t like their wives using their razors because it dulls the blade. But also, I think it’s a territorial thing. “Get your own razor,” etc.
I’ve shaved in California, Louisiana, several places in Europe, Washington… Many areas, in fact.
I’ve never noticed a difference in any of those areas.
i find a razor that i have used once or twice is the most comfortable.
** Johnny L.A. ** 
Thanks for the serious answers, and ** dtilque, ** for your having sent me to Cecil. I had sent up a search before posting the question, but I used just the words, ‘razor dullness’ and didn’t get the response that I was looking for.
** Duck Duck Goose, ** what made your answer particularly helpful was addressing what I didn’t ask. I’ve always tended to cut myself after using the blade once or twice, and it’s the same * kind of cut * and NOW I know it comes from bearing down on the razor! :eek:
Happy to be of service. 
BTW, the Search function has its “mouthbreathing” days for me, too. :: sigh ::