Maryland Business Occupations and Professions Section 5-607
§ 5-607.
  (a)   An owner or lessee of a beauty salon may not knowingly:
    (1)   employ in the beauty salon an individual with an infectious or contagious disease that presents a hazard to a patron; or
    (2)   after discovering an individual has an infectious or contagious disease that presents a hazard to a patron, continue to employ the individual in the beauty salon.
  (b)   (1)   An individual who knows that the individual has an infectious or contagious disease that presents a hazard to a beauty salon patron may not practice cosmetology.
    (2)   An individual who knows that another individual has an infectious or contagious disease that presents a hazard to a beauty salon patron may not practice cosmetology on that other individual.
  (c)   An individual may not practice cosmetology in a careless or negligent manner so as to:
    (1)   cause an infection; or
    (2)   impart an infectious or contagious disease that presents a hazard to a beauty salon patron.