Md. Code, Bus. Occ. & Prof. § 4-306

(a) Subject to the provisions of this section, the Board may waive any examination requirement of this subtitle for: (1) an applicant for a master barber or a barber license who is licensed to practice barbering in another state; or (2) an applicant for a barber–stylist limited license who is licensed to provide barber–stylist services in another state. (b) The Board may grant a waiver under this section only if: (1) the applicant pays the application fee set by the Board under § 4–206 of this title and any applicable examination fee required under § 4–303 of this subtitle for any examination requirement that is not waived by the Board; (2) the applicant provides adequate evidence that the applicant: (i) meets the qualifications otherwise required by this subtitle; and (ii) became licensed in the other state after passing, in that or any other state, an examination that is similar to the examination for which the applicant is seeking the waiver; (3) the applicant practiced barbering in the other state as a master barber or barber or provided barber–stylist services in the other state as a barber–stylist during the 2 years immediately before applying in this State; (4) the applicant provides: (i) a notarized statement from a previous employer certifying that the applicant has the experience required under item (3) of this subsection; or (ii) if the applicant was self–employed, other proof that is acceptable to the Board; (5) the applicant submits a letter from the licensing board of the other state certifying that the applicant is in good standing with the board of the other state; and (6) the applicant certifies in writing that the applicant has read, understands, and will comply with the provisions of this title and the regulations of the Board.