A.  The following persons are exempt from the provisions of this Chapter while in the proper discharge of their professional duties:

(1)  Persons authorized by law to practice medicine or surgery.  

(2)  Commissioned medical or surgical officers of the United States Army, Navy, or Marine Hospital Service.  

(3)  Registered nurses.  

(4)  Persons authorized by law to practice cosmetic therapy or beauty culture.  

B.  The provisions of this Section shall not authorize any of the above exempted persons to shave or trim the beard or to cut the hair of any person for cosmetic purposes.  

Acts 1964, No. 309, §1.  Acts 1984, No. 238, §1.