Colo. Rev. Stat. § 25-4-2101
In addition to any other powers and duties, the department of public health and environment shall promulgate rules governing the safe and sanitary practice of body art, the safe and sanitary physical environment where body art is performed, and the safe and sanitary conditions of equipment utilized in body art procedures. Nothing in this section shall be construed to prohibit a city, county, or district board of health established pursuant to part 5 of article 1 of this title, or a county or district public health agency established pursuant to part 5 of article 1 of this title, from adopting or enforcing ordinances, resolutions, or rules that impose standards for body art that are at least as stringent as the standards imposed by the rules adopted by the department of public health and environment.
C.R.S. § 25-4-2101