How long should you wash your hands for effective sanitation?

Washing hands for at least 20 seconds is considered the most effective duration for sanitation because it allows sufficient time for soap to penetrate and disrupt the oils and dirt on the skin, removing pathogens. This period is essential to ensure that all surfaces of the hands, including between fingers, under nails, and around the wrists, are thoroughly cleaned.

Research has shown that shorter durations, like 5 or 10 seconds, may not adequately remove all contaminants, particularly in a food handling context where the risk of foodborne illness is heightened. The 20-second recommendation aligns with guidelines from health authorities which emphasize proper hand hygiene as a critical step in preventing the spread of infections and ensuring food safety.