"Waterless, antibacterial hand sanitizers are marketed as a way to 'wash your hands' when soap and water aren't available, and they are especially popular among parents of small children," says ...
They asked 20 people to wash their hands 20 times each with water that was 15C (59F), 26C (79F) or 38 degrees (100F). Volunteers were also asked to experiment with varying amounts of soap.
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