I've read that modern soap is just a form of detergent, and detergent works best in cold water, right?Why do soap instructions ask you to use hot water to wash your hands?
Heat will also help break up oil. Look at a grease-ridden frying pan after washing it with cold water and soap. Then look at it after you have to wash it again in hot water.Why do soap instructions ask you to use hot water to wash your hands?
i don't think temperature matters
but by saying 'hot' they have an out if you sue
they just say your hot was not 'hot' enough
Soap works by mechanically removing bacteria and other particulate matter from you hands. The hot water helps the soap suds up as well as kill bacteria on your hands.
You are supposed to use the hottest water that you can handle... this will clean and sanitize your hands much better than cold water.
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