How must one wash hands according to the correct procedure?

Washing hands with warm running water and soap is essential for effective hand hygiene. The use of warm water not only helps to remove dirt and debris more effectively but also enhances the lathering of soap, which is crucial for loosening and dislodging germs from the skin. The mechanical action of scrubbing, combined with the surfactants in soap, helps to break down and wash away pathogens that may be present on the hands.

Proper handwashing is critical in preventing the spread of infections, as it removes microorganisms that can cause illness. The Centers for Disease Control and Prevention (CDC) and other health organizations endorse this method as a best practice, particularly in settings where hand hygiene is vital, such as healthcare, food handling, and public spaces.

While hand sanitizer can be a useful alternative in the absence of soap and water, it does not remove dirt or grease as effectively and is not a substitute for proper handwashing in situations where hands are visibly soiled. Washing hands thoroughly with soap and warm water remains the preferred method for ensuring optimal hygiene.