How long should you scrub your hands after lathering with soap?

Scrubbing your hands for at least 20 seconds after lathering with soap is the recommended duration to effectively remove contaminants, bacteria, and viruses from your skin. This length of time allows the soap to break down oils and dirt on your hands, while also ensuring that you scrub all surfaces, including the backs of your hands, between your fingers, and under your nails.

The effectiveness of handwashing not only relies on the use of soap but also on the mechanical action of scrubbing. Research and public health guidelines emphasize that a minimum of 20 seconds is necessary to provide adequate cleansing, particularly in preventing the spread of infections. Many health organizations suggest using a timer or singing a song that lasts about 20 seconds to ensure thorough cleansing.