if a hand sanitizer or soap kills up to 99.9% of germs, does lathering your hands with huge amounts of soap make any difference vs a simple pump or two of soap?

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Answer 1

A simple pump or two of soap is enough. More than that will just go to waste. The most important things are time and friction.

Washing your hands gets rid of germs both chemically and physically. The soap or sanitizer kills the germs it contacts (chemical,) but this is not instant. More time = more germs killed. Vigorously rubbing your hands together, with soap and water, washes germs off of your hands and down the drain (physical.)

Recent research shows that the temperature of the water is less important than we once thought.