Which aspect of hand washing is most effective when there is visible dirt on the hands?

Question

Quizplus · Accepted Answer

Using plenty of lather with friction is the most effective aspect of hand washing when there is visible dirt on the hands. This helps to loosen and remove the dirt and bacteria from the skin's surface. Using hot water instead of warm water may dry out the skin and cause irritation, and drying the hands vigorously from wrists to fingers may cause skin damage. Applying lotion to the hands is important for keeping the skin moisturized, but it is not effective in removing dirt and bacteria.

Which Aspect of Hand Washing Is Most Effective When There