Final answer:
Friction and running warm water are the two most important factors in performing an effective hand wash.
Step-by-step explanation:
The two most important factors in performing an effective hand wash are friction and running warm water. When washing your hands, it is important to rub your hands together vigorously with soap to create friction. This helps to physically remove dirt, germs, and bacteria from the surface of your skin. Running warm water helps to facilitate the removal of dirt and microorganisms by rinsing them off your hands.