What is an important step for proper hand washing?

Thoroughly washing hands for at least 20 seconds is critical for effective hand hygiene. This duration allows for the removal of dirt, debris, and a significant reduction of microorganisms that can cause illness. The process of washing hands involves not just the duration but also the techniques used, such as scrubbing all parts of the hands, including between fingers and under fingernails.

The recommended 20-second duration is supported by health organizations, which emphasize that this time frame is necessary to ensure that the soap has enough time to disrupt the oils and dirt on the skin and to properly rinse away bacteria and viruses. In contrast, washing for only 5 seconds is insufficient to achieve effective hand cleansing.

Using only hand sanitizer is not a substitute for proper handwashing, especially when hands are visibly dirty or greasy. Furthermore, rinsing hands in cold water only does not contribute to the effectiveness of the handwashing process, which is typically most effective when using warm or hot water to enhance soap lathering and cleaning power.