Maryland Code, Business Occupations and Professions § 4-305

(1) pays the examination fee required under § 4-303 of this subtitle;

(2) provides adequate evidence that the applicant has been licensed as a barber-stylist, barber, or master barber, whichever is applicable, in another state for at least the 6 months immediately preceding the filing of the application; and

(3) passes the applicable examination.