MN gets rid of fungus. So technically, it isn't cleaning your scalp. It's freeing it of fungus that could have been causing itching and flakes before. People wash for many different reasons. Some to clean the hair...some the scalp...some people have oily scalps. If you don't feel you need to wash, then maybe you don't. If it's working for you, I don't see why you should change your routine.