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Posted on Apr 19, 2022

Is it better to use hot or cold water to wash your hands?

In its medical term  the Food and Drug Administration states that hot water is enough for washing hands, but it will not help in killing the bacteria. Hot water by definition, has faster moving molecules than cold water. (The molecular speed translates into heat.) All other things being same  faster moving molecules do a good  job of cleaning than slower moving molecules (in displacing the dirt and transporting it away using water. Contrary to important belief, washing your hands in hot water isn’t the best way to go.  The oils on your hands involves bacteria and germs and warm water and soap ismore effective to remove them.

 Washing your hands in hot water may be pointless as researchers  have found that cold water is equally effective at killing germs. Researchers also found that washing even for 10 seconds significantly removed bacteria from the hands. While the study focus  that there is no difference between the amount of soap used, more work needs to be done to understand exactly how much and decide which type of soap is require  to remove harmful microbes from hands, researchers said. It is important because the biggest public health need is to increase hand washing or hand sanitising by food-service workers and the public before eating, preparing food . They determined that there was no difference in the number of insects removed in each of the water temperatures or amounts of soap.