Leviticus 13:32-34

32On the seventh day the kohen is to examine the plague, and behold, if the scab has not spread and there is no yellow hair in it, and the appearance of the scab is no deeper than the skin,

33then he should be shaved, but he is not to shave the scab. The kohen is then to isolate the one who has the scab for seven more days.

34On the seventh day, the kohen is to examine the scab, and behold, if the scab has not spread in the skin and its appearance is no deeper than the skin, then the kohen shall pronounce him clean. He is to wash his clothes, and be clean.