Well I'm wearing my girlfriends panties so I'm probably not the best person to ask.
How is dragging a razor across your face and aggressively rubbing bristles of hair on it anything at all like touching dirty money? That is a ridiculous analogy.
I don't see any reason why this is worth doing. Safe or not, it is easier to just buy another brush.
Not ridiculous since we constantly touch our face, mouth and eyes throughout the day, I doubt we wash each time before touching those areas of our body.
I'm surprised to see so many people say it is unsanitary to share a brush for a day. Most people shave right after a shower so your face is already clean before it gets used. On top of that it's loaded with soap and then washed immediately and dried. I really think this is a non issue, especially if you're talking about a one time use.
Too many Germophobes . Think about the everyday stuff that you handle or touch. Way more germs on the money in your pocket than whats on a soaped up brush. Unless the other person is known to have an infectious disease or condition it's a non-issue. That however is just my opinion. I take anti-rejection meds for a kidney transplant so my immune system is compromised to begin with.
Now the soap should kill off most of the bad bugs fairly soon
None of those activities expose blood. Shaving does.
Also, none of those activities free as many dead skin cells as scrubbing your face with a brush. It's kind of like sharing a loofah with someone.
The issue isn't the common cold germ, but nasty pathogens like HIV, Hep C, Mersa, etc... Most of us make multiple passes, so if you get a nick on pass one you are mixing raw blood into the brush on the next pass or two. You then pass the brush off to your buddy and he is applying your raw blood to his face. Now the soap should kill off most of the bad bugs fairly soon, but just saying.
Very few nasties can tolerate drying out so I have little issue with using a used brush from the bay or shop. A good washing and into use it goes.
Are we talking about ... actually sharing a brush as in shaving at the same time?
No telling what kind of bacteria you come in contact with during the day, blood spots and other nasties aren't always visible to the eye. If someone nicked themselves during a shave, or have a discomfort to share the brush, was why I recommended a quick cleaning in my first post...
I don't know the answer, but I know that I typically don't go into the bathroom while other people are using it.
Are we talking about borrowing someone else's brush to shave with, or actually sharing a brush as in shaving at the same time? How is borrowing someone else's brush for use any different than purchasing a used brush?