Nail brushing
Proper use of a nailbrush can double the cleaning power. Friction is an important factor in hand cleansing. It helps penetrate and remove biofilms. It is better to use a good nailbrush in high soil situations rather than selecting an aggressive hand soap.
To clean under and around your nails, use a nail brush with natural boar or plastic bristles with a gentle soap and water. The bristles should be firm enough to remove dirt and debris.
You can also soak nails for a few minutes in a bowl of warm water to loosen the dirt, and then gently remove with the nail brush.