Journal of food protection held a study, in which 20 people washed their hands with warm or cold water and in the end they determined that the temperature does not matter. Also scientists at Rutgers did a bug study in which they put harmless bugs on peoples’ hands. Half of them washed it with cold water and the other half washed with warm water. To their conclusion the temperature did not make a difference when it comes to bug removal.

Key Takeaways:

• Researchers say there was no difference in the amount of bugs removed as the temperature of the water or the amount of soap changed.
• In the UK, NHS experts say people can use cold or hot water to wash their hands.
• They say hands should be washed for at least 20 seconds and stress the importance of using enough soap to cover the whole surface of the hands.

“US scientists say they have poured cold water on the theory that washing hands with hot water kills more germs than unheated water.”

Read more: https://www.bbc.co.uk/news/health-40118539