Leviticus 13:30-40

30 the priest shall examine the disease; and if it appears deeper than the skin, and the hair in it is yellow and thin, then the priest shall pronounce him unclean; it is an itch, a leprosy of the head or the beard.
31 And if the priest examines the itching disease, and it appears no deeper than the skin and there is no black hair in it, then the priest shall shut up the person with the itching disease for seven days,
32 and on the seventh day the priest shall examine the disease; and if the itch has not spread, and there is in it no yellow hair, and the itch appears to be no deeper than the skin,
33 then he shall shave himself, but the itch he shall not shave; and the priest shall shut up the person with the itching disease for seven days more;
34 and on the seventh day the priest shall examine the itch, and if the itch has not spread in the skin and it appears to be no deeper than the skin, then the priest shall pronounce him clean; and he shall wash his clothes, and be clean.
35 But if the itch spreads in the skin after his cleansing,
36 then the priest shall examine him, and if the itch has spread in the skin, the priest need not seek for the yellow hair; he is unclean.
37 But if in his eyes the itch is checked, and black hair has grown in it, the itch is healed, he is clean; and the priest shall pronounce him clean.
38 "When a man or a woman has spots on the skin of the body, white spots,
39 the priest shall make an examination, and if the spots on the skin of the body are of a dull white, it is tetter that has broken out in the skin; he is clean.
40 "If a man's hair has fallen from his head, he is bald but he is clean.
Revised Standard Version of the Bible, copyright 1952 [2nd edition, 1971] by the Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.