then the Kohen shall examine the plague; and behold, if the appearance of it is deeper than the skin, and the hair in it is yellow and thin, then the Kohen shall pronounce him unclean: it is an itch, it is leprosy of the head or of the beard.
On the seventh day, the Kohen shall examine the itch; and behold, if the itch hasn't spread in the skin, and its appearance isn't deeper than the skin, then the Kohen shall pronounce him clean. He shall wash his clothes, and be clean.