Does a person who provides threading services need to be licensed in Arizona?

See A.R.S. §32-506 which exempts certain people from licensure including: 

    (11) Persons who provide a service that results in the removal of hair from its follicle from around the eyebrows and from other parts

    of the face with the use of a single strand of cotton thread and an over-the-counter astringent, if the service does not use chemicals

    of any kind, wax, or any implements, instruments or tools to remove hair.