Yes. You should use razors more than once - you will know they are ready to be replaced when you feel as if they are tugging at the hairs rather than cutting them. Alcohol is a fine disinfectant, although it is likely not necessary to disinfect the blades after use (just give it a good rinse and let it air dry).
Yes you can but you shouldn't. It is unsanitary because of the dead skin that someone else leaves in the razor and it can give you infections in your skin.
No.
The best place to buy disposable razors in large quantity would be a wholesaler or store liquidator. They can be found at Overstock and Wholesale Central.
just because
disposable shampoo and conditioner containers disposable items such as razors or nappies surgical pins slow release insecticides
These items are sold as disposable but you could reuse them.
The most basic reason for disposable razors is because they are relatively inexpensive to buy and use and can be thrown out when they become dull or useless.
Yes, may be
Diapers, razors, paper towels, cans, cups, trash bags, and toilet paper.
If an electric razor is desired, then Braun and Norelco are two of the best quality brands. Disposable razors are just that, cheap and throw away. Names like Bic are popular.
Haircuts are done by other inmates. Most inmates have access to disposable razors for shaving.
King Camp Gillette founded the Gillette Safety Razor Company in 1901 and began selling his safety razors with disposable blades two years later.
According to the TSA website on what is permitted in carry-on baggage, you can bring "safety razors - including disposable razors." See http://www.tsa.gov/travelers/airtravel/prohibited/permitted-prohibited-items.shtm#2 . This would not likely include those old-fashioned straight razors that utilize disposable blades, as it is obvious how those can be used as a dangerous weapon. no