What is the recommended duration for washing hands with soap and water?

The recommended duration for washing hands with soap and water is 20 seconds. This time frame is established based on research indicating that sufficient rubbing and lathering are essential to effectively remove dirt, bacteria, and viruses from the hands. Washing for at least 20 seconds allows for comprehensive coverage of all surfaces of the hands, including between the fingers and under the nails, which are common areas where pathogens can be overlooked.

The effectiveness of handwashing significantly increases with this duration, making it more likely for harmful microorganisms to be eliminated. This guideline is supported by health organizations, such as the Centers for Disease Control and Prevention (CDC), which emphasize the importance of thorough handwashing as a critical practice in infection control and prevention.