Leviticus 13:29-31

29“If anyone, either a man or woman, has a sore on the head or chin,

30the priest must examine it. If he finds it is more than skin-deep and has fine yellow hair on it, the priest must pronounce the person ceremonially unclean. It is a scabby sore of the head or chin.

31If the priest examines the scabby sore and finds that it is only skin-deep but there is no black hair on it, he must quarantine the person for seven days.