Leviticus 13:32

13:32 The priest must then examine the infection on the seventh day, and if the scall has not spread, there is no reddish yellow hair in it, and the scall does not appear to be deeper than the skin,

Leviticus 13:36

13:36 then the priest is to examine it, and if the scall has spread on the skin the priest is not to search further for reddish yellow hair. The person is unclean.