Does Hot Water or Cold Water Kill Germs When Washing Hands? If we go under the shower, we regulate the temperature of the water and even when washing hands we prefer warm water rather than cold. Not only is it more pleasant to wash oneself with warm water, we also feel cleaner after a while than if we had used only cold water. Scientists have now turned to the question of whether hand washing with cold or warm water is better.
Where better in this case means that it protects us better from infections, that more germs are eliminated. The fewer germs we have on our hands, the less likely we are to infect ourselves or infect others with them.
Therefore, washing your hands should become routine, for example after shopping. But it must be enough soap for an effective hand wash Much more important than the water temperature is the duration of the hand washing and also the question of whether enough soap was used.
Hot or Cold?
Researchers at Rutgers University-New Brunswick, New Jersey found in their study that there is no significant difference in cleaning hands with cold or warm water. To free the hands of germs effectively, the experts say, no warm water is needed. In the new study, not only the water temperature was examined, but also soap volume, foam time and the hand washing effect of the soap.
Likewise, antimicrobial soaps were not much more effective than regular soaps. The study also found that even brief hand washing could be enough to remove germs. It is generally recommended to wash your hands for about 30 seconds with enough foam. Wash your hands how many times?
Hand washing is an effective protection against infection. But how often should you wash your hands? For this there is no clear rule, after all it depends on how often one had opportunity to become infected with germs.
If you travel several times a day, drive a bus, push a shopping cart, touch a door and press a handle down there, you should actually wash your hands after every contact. Those who tend to stay at home have to wash less often, unless of course there is a lot of traffic at home. Sitting-related hand washing is more important than following a fixed plan.