An individual who holds a current, valid cosmetologist or advanced cosmetologist license issued by the state board of cosmetology may engage in the practice of one or more branches of cosmetology as the individual chooses in a licensed facility. An individual who holds a current, valid esthetician or advanced esthetician license issued by the board may engage in the practice of esthetics but no other branch of cosmetology in a licensed facility. An individual who holds a current, valid hair designer or advanced hair designer license issued by the board may engage in the practice of hair design but no other branch of cosmetology in a licensed facility. An individual who holds a current, valid manicurist or advanced manicurist license issued by the board may engage in the practice of manicuring but no other branch of cosmetology in a licensed facility. An individual who holds a current, valid natural hair stylist or advanced natural hair stylist license issued by the board may engage in the practice of natural hair styling but no other branch of cosmetology in a licensed facility. An individual who holds a current, valid cosmetology instructor license issued by the board may teach the theory and practice of one or more branches of cosmetology at a school of cosmetology as the individual chooses. An individual who holds a current, valid esthetics instructor license issued by the board may teach the theory and practice of esthetics, but no other branch of cosmetology, at a school of cosmetology. An individual who holds a current, valid hair design instructor license issued by the board may teach the theory and practice of hair design, but no other branch of cosmetology, at a school of cosmetology. An individual who holds a current, valid manicurist instructor license issued by the board may teach the theory and practice of manicuring, but no other branch of cosmetology, at a school of cosmetology. An individual who holds a current, valid natural hair style instructor license issued by the board may teach the theory and practice of natural hair styling, but no other branch of cosmetology, at a school of cosmetology. An individual who holds a current, valid boutique registration with the board may engage in the practice of boutique services but no other branch of cosmetology.