Leviticus 13:30
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.
Leviticus 13:34-37
And on the seventh day the priest will see the place: and if it is not increased, and does not seem to go deeper than the skin, the priest will say that he is clean: and after his clothing has been washed he will be clean.
Leviticus 14:54
This is the law for all signs of the leper's disease and for skin diseases;
Treasury of Scripture Knowledge
Summary
Then the priest shall see the plague: and, behold, if it be in sight deeper than the skin; and there be in it a yellow thin hair; then the priest shall pronounce him unclean: it is a dry scall, even a leprosy upon the head or beard.
Bible References
Scall
Leviticus 13:34
And on the seventh day the priest will see the place: and if it is not increased, and does not seem to go deeper than the skin, the priest will say that he is clean: and after his clothing has been washed he will be clean.
Leviticus 14:54
This is the law for all signs of the leper's disease and for skin diseases;