What is the primary purpose of using friction while washing hands?

The primary purpose of using friction while washing hands is to help remove dirt and germs. When individuals wash their hands, the mechanical action of rubbing and scrubbing creates friction, which dislodges pathogens and debris from the skin's surface. This action is crucial because merely rinsing with water may not effectively eliminate harmful microorganisms. By generating friction, handwashing becomes more effective in reducing the microbial load on the hands, which is essential for preventing the transmission of infections in a hospital setting. Thus, incorporating friction during handwashing ensures a thorough cleansing process, leading to better hygiene and safety for both healthcare workers and patients.