Alabama Code Title 45. Local Laws § 45-39-40.20

(a) Nothing in this article shall prohibit service in case of emergency or domestic administration, without compensation, nor services by persons authorized under the laws of this county to practice medicine, surgery, dentistry, chiropody, osteopathy, or chiropractic. This article shall not apply to the services of personnel of the United States Army, Navy, Air Force, or Marine Corps, or to registered nurses doing any of the acts or works defined as barbering;  and this article shall not apply to the teaching or practice of barbering in training public school or trade school pupils.

(b) This article shall not apply to any person who only occasionally practices barbering and receives no compensation therefor, or does any act or thing mentioned in subdivision (1) of Section 45-39-40.02 without holding herself or himself out to the public as a practicing barber, as defined in this article. Cosmetologists are hereby expressly excluded from this article.