You have to learn to clean and bandage your own cuts yourself, that is the point. But at first you don't know how and they show you, over and over. Bodies do all the real healing, medicine only helps the process; the bandage helps keep it clean but eventually the cut closes anyway. If yours is older and/or infected, it's necessary to take the bandage off each time to check and re-clean it, debrid the damaged tissue, etc.