Leviticus 13
29 Ref And when a man or a woman has a disease on the head, or in the hair of the chin,
30 Ref Then the priest is to see the diseased place: and if it seems to go deeper than the skin, and if there is thin yellow hair in it, then the priest will say that he is unclean: he has the mark of the leper's disease on his head or in the hair of his chin.