Poll???
How do you wash your hands after the toilet?
Cold water and soap.
Hot water and soap.
Antibac gel.
I dont because im a tramp.....
My wife thinks its pointless as i just used antibac liquid soap thing and cold water, says it wont work, i have to use hot water!?
Most bacteria that can survive on skin can survive temperatures roughly as high as human skin cells can. The "hot" water that can comfortably be used for washing wouldn't kill them. There are some far more temperature-sensitive bacteria, e.g. the bacteria that cause syphillis die in the low 40s, so low that a really high fever will usually cure a person of syphillis. I only know that because the strange fact that malaria was used to cure syphillis for quite a while has stuck in my head. As far as I know, they can't survive on skin anyway, probably because they're so temperature sensitive.
It's possible that "hot" water (which isn't really hot) might increase the efficiency of the surfactant (soap or whatever). I doubt if the small range of temperature involved would make any significant difference to it, though, especially for soap that's liquid at the temperature of cold water. The tiny amount of research done on the subject found temperature variation from 6C to 53C had absolutely no effect at all on handwashing efficiency. What matters is how well you wash your hands - coverage, duration, mechanical action. Which makes sense, since the point of soap is only to make it easier to remove greasy stuff from the surface of your skin.
Antibacterial soap is of disputed usefulness anyway and the most common chemical used (Triclosan) might even be dangerous. It's been banned from cleaning products in the USA because manufacturers couldn't provide any evidence it worked any better than soap without it or prove that it's safe for human use (there's evidence it does harm in animal trials).
I use warm or cold water, whichever is available, and wash my hands properly. Soap all over (many people don't wash their thumbs) and rubbing. It's the rubbing that's the main factor. I'll choose warm water over cold, but only because it's more comfortable.