D.C. Mun. Regs. tit. 17, § 3721
3721.1 A licensed barber instructor is permitted to practice as a barber without obtaining a separate barber license.
3721.2 A licensed cosmetology instructor is permitted to practice as a cosmetologist class A without obtaining a cosmetologist class A license.
3721.3 A licensed specialty cosmetology instructor is permitted to practice all disciplines within that specialty without obtaining any other professional specialty cosmetology license.
SOURCE: Final Rulemaking published at 50 DCR 7699 (September 12, 2003); as amended by Final Rulemaking published at 73 DCR 007846 (May 22, 2026).