My aunt was helping me learn to drive. During one of our lessons, I asked her for any natural remedies she may know:
M: “I know of a few, mainly because of your grandma. When we [my aunt and her siblings] were young, sometimes we would get small cuts behind our ears, inbetween our ears and our scalps. Your grandma would wake up and before she brushed her teeth, she would rub her saliva behind our ears which would help the cuts heal. We called this ‘Saliva Agria’ which roughly translates to ‘Sour Saliva’.”
Again, to my aunt this is a genuine remedy for curing cuts. She experienced that cuts and the healing that came with the saliva. I do not know if this practice can be applied to any cuts as she did not specify. However, I feel like she would have mentioned if my grandma did this on other cuts as well. I am going to assume this was just for cuts that formed behind the ear. I do not know if saliva has any healing qualities so I cannot determine the validity of this particular folk belief. Also, my mom did not do this to my sister or me when we were growing up.