How long should you wash your hands to effectively remove pathogens?

• A. 10 seconds
• B. 20 seconds
• C. 60 seconds
• D. 90 seconds

Answer: (B)

Washing hands for about twenty seconds is the standard because it gives enough time for soap to break down oils and for you to scrub all surfaces thoroughly. This includes the palms, backs of the hands, spaces between the fingers, under the nails, thumbs, and wrists. The combination of soap and friction over that duration helps lift and rinse away pathogens effectively. Shorter times, like ten seconds, often miss some areas and don’t remove as many microbes. Longer times, such as sixty or ninety seconds, don’t provide extra protection and can lead to skin irritation or reduced compliance, making people less likely to wash properly. So, aim for about twenty seconds of continuous lathering and scrubbing, then rinse and dry.