Maryland Business Occupations and Professions Section 5-404
§ 5-404.
  While registration as an apprentice is in effect, the registration authorizes the individual to learn to practice cosmetology or any limited practice of cosmetology:
    (1)   in a:
      (i)   beauty salon that holds a beauty salon permit; or
      (ii)   barbershop that holds a barbershop permit; and
    (2)   under the supervision of:
      (i)   if learning to practice cosmetology, a licensed senior cosmetologist;
      (ii)   if learning to provide esthetic services, a licensed senior cosmetologist or a licensed esthetician with 2 years' experience; and
      (iii)   if learning to provide nail technician services, a licensed senior cosmetologist or a licensed nail technician with 2 years' experience.