What should be done to clean fingernails during hand washing?

During handwashing, rubbing fingertips against the palm of the opposite hand is an effective way to clean under the fingernails. This technique allows for friction, which helps to dislodge any dirt or bacteria that may be trapped under the nails. It is a practical method that can be easily performed during the handwashing process without the need for additional tools.

Using a nail brush, for instance, can be effective, but it may not always be available in every setting where handwashing takes place. Soaking fingers in warm water or pulling nails across the edge of a sink may not adequately remove debris or germs, and these methods could potentially lead to other hygiene concerns. The chosen method of rubbing fingertips against the palm is a simple, yet sufficient approach to ensure cleanliness while promoting good hand hygiene practices.