In each cosmetological establishment or school of cosmetology:
Nev. Admin. Code § 644A.755
NRS 644A.275, as amended by section 18 of Senate Bill No. 249, chapter 165, Statutes of Nevada 2023, at page 878, and NRS 644A.280, as amended by section 19 of Senate Bill No. 249, chapter 165, Statutes of Nevada 2023, at page 878