1.2 Missouri Board Rules: Sanitation, Prohibited Practices & Establishment Compliance

Key Takeaways

  • Missouri rule 20 CSR 2085-11.020 requires implements to be disinfected in an EPA-registered bactericidal, virucidal, and fungicidal disinfectant for at least five minutes.
  • Missouri licensees may not provide any service using a liquid product that contains methyl methacrylate (MMA); ethyl or butyl methacrylate products are acceptable (20 CSR 2085-11.020(2)(J)).
  • Missouri prohibits using, offering to use, or possessing razor-type callus shavers such as credo blades in a licensed cosmetology establishment (20 CSR 2085-11.020(2)(L)).
  • A Missouri operator license must have a 2-by-2-inch photograph taken within the last five years attached (20 CSR 2085-10.010(3)(B)).
  • A new Missouri nail salon cannot open until the Board approves its application, receives the fee, and the salon passes a Board inspection (20 CSR 2085-10.010).
Last updated: September 2026

The NIC written examination tests national infection-control principles, but a Missouri inspector enforces Missouri's exact rules. This section translates the rules you will be held to in a Missouri salon into what they mean at your nail table. The disinfection science behind these rules is covered in Chapter 2.

Where the Rules Live

RuleSubjectWhy a manicurist cares
20 CSR 2085-3.010FeesRenewal, reinstatement, reciprocity, and establishment fees
20 CSR 2085-4General rulesRenewal dates, identification, duplicate licenses, inspections
20 CSR 2085-7Cosmetology licensingExaminations, temporary permits, reciprocity, work outside a salon
20 CSR 2085-10EstablishmentsShop licensing, booth rental, license display, unlicensed activity
20 CSR 2085-11.020Cosmetology sanitationFacilities, disinfection, blood spills, MMA, and credo blade bans
RSMo 329.140DisciplineGrounds for the Board to refuse, suspend, or revoke a license

Establishment Licensing and Inspections

  • Every establishment needs a license. Under RSMo 329.045 and 20 CSR 2085-10.010, anyone opening a nail salon must apply at least 30 days before opening. The application includes a floor plan with dimensions and square footage, the minimum equipment required, and the establishment fee.
  • No opening before approval. A salon may not open until the Board has the completed application and fee, the salon passes a Board inspection, and the Board approves it. Opening early adds a delinquent fee.
  • Booth and chair renters need their own establishment license for the rented space in addition to their operator license.
  • Changes: after a change of ownership or location, the owner must apply for a new establishment license within 45 days. A name change requires a new license before services are offered under the new name.
  • Operator count: the basic establishment fee covers up to three operators, including apprentices and students with temporary permits. Each additional operator costs $10 (20 CSR 2085-10.050 and 3.010).
  • Inspections: every establishment must be open to inspection by Board members, representatives, or inspectors during normal working hours (20 CSR 2085-4.060).
  • Only licensed people may do the work. No one without a Missouri license may manicure inside a licensed establishment, even for free (20 CSR 2085-10.060).

License Display and Identification

  • The establishment license must be posted in plain view.
  • Operator licenses must be posted either at each person's work station or together in one conspicuous, central location (20 CSR 2085-10.010(3)(A)).
  • A 2" × 2" photograph taken within the last five years must be attached to each operator license, apprentice license, and student temporary permit (20 CSR 2085-10.010(3)(B)).
  • A photocopied or reproduced license may not be posted. Duplicate licenses come only from the Board (20 CSR 2085-4.030).
  • Carry a driver's license or Missouri identification card while working (20 CSR 2085-4.040).

The Cosmetology Sanitation Rule: 20 CSR 2085-11.020

AreaWhat the rule requiresWhat it looks like at a nail station
LightingAt least 30 footcandles where services are performed; 5 footcandles in waiting and storage areasBright, even task lighting at every table
VentilationEnough ventilation to dispel odors, condensates, and vapors; fans, vents, and hoods where neededSource-capture or vented tables for monomer and filing dust
SurfacesFloors, walls, ceilings, equipment, and contents made of washable materials, kept clean and in good repairNon-porous table tops and wipeable chairs
WaterHot and cold water at lavatories; hot water not to exceed 120°F; soap and individual towelsHand-washing sink with liquid soap and single-use towels
TowelsClean towels for each patron, kept in a closed cabinet or drawer; soiled towels go immediately into a closeable, leakproof containerClosed clean-linen drawer; lidded soiled-linen bin
AnimalsNo animals except service animalsNo salon pets
ProductsNo open powder boxes or shared powder puffs; powders from shakers or similar dispensers; creams removed with a clean, sanitized spatula or sterile cotton swab; containers covered when not in usePump bottles, shakers, and spatulas — never fingers in a jar
ImplementsCleansed after each use; disinfected with an EPA-registered disinfectant labeled bactericidal, virucidal, and fungicidal, used per manufacturer instructions; fully immersed (or thoroughly dipped if not immersible) for at least 5 minutesClean first, then immerse for the label contact time, and never less than 5 minutes
StorageStored in the solution or in a dust-tight cabinet, covered container, or drawer that holds nothing that can't be disinfected; implements may air dryCovered "clean" container that holds only disinfected tools
Disease controlTake all proper precautions against spreading communicable disease; wear disposable gloves if you have open wounds, dermatitis, or other non-intact skin on your handsGloves on any time your own skin is broken
Blood spillsSpecific steps for a cut to the licensee or the patron (see Section 2.3)First-aid supplies kept at the station
WasteCovered waste receptacles; nail clippings swept up and discarded after each patronLidded trash at every station
Safety dataProduce the Material Safety Data Sheet (now called the SDS) for any service product on an inspector's requestSDS binder or digital file that staff can reach

The Two Explicit Prohibited Practices

Methyl Methacrylate (MMA) Liquid Monomer

Rule 20 CSR 2085-11.020(2)(J) states that no licensee may provide services "that involve the use of any liquid product containing methyl methacrylate (MMA)." Licensees are personally responsible for making sure their nail products do not contain MMA as a monomer. The rule specifically says products containing ethyl or butyl methacrylate are acceptable. At the federal level, the FDA investigated MMA injury complaints in the 1970s and took court action to remove 100% liquid MMA products from the market, but it has no regulation specifically banning MMA. In Missouri, the ban comes from the Board rule. Section 8.2 explains why MMA damages nails.

Razor-Type Callus Shavers (Credo Blades)

Under 20 CSR 2085-11.020(2)(L), a licensee may not use, offer to use, or possess on the premises "any razor-type callus shaver designed or intended to cut growths of skin on hands or feet such as corns and calluses," including a credo blade.

  • Using one is treated as providing services in an unsafe and unsanitary manner.
  • Establishment license holders must make sure no razor-type callus shavers are located or used on the premises.
  • Every cosmetology establishment and school must post the Board's flyer prohibiting razor-type callus shavers in plain view of the public.
  • A violation is grounds for discipline under RSMo 329.140.2(15), the provision for failing to guard against contagious, infectious, or communicable disease.

Callus care in Missouri therefore means softening and gently smoothing with foot files or other abrasives, as described in Section 7.2 — never cutting.

Discipline and Penalties

RSMo 329.140.2 lists grounds for discipline. The ones that matter most at a nail table include:

  • incompetence, misconduct, gross negligence, fraud, or dishonesty in your work;
  • violating Chapter 329 or any Board rule;
  • helping an unlicensed person practice;
  • failing to display a license when required;
  • failing to guard against the spread of contagious, infectious, or communicable diseases.

After the Administrative Hearing Commission finds grounds, the Board may censure, place a license on probation for up to five years, suspend it for up to three years, or revoke it. Violating Chapter 329 — including practicing without a required license — is a class C misdemeanor under RSMo 329.250.

Services Outside the Salon

Cosmetology services must be provided in a licensed establishment. A licensee may occasionally provide services elsewhere (not at their principal place of work) if they give the client a completed certificate of identification before the service (20 CSR 2085-7.020). The certificate lists the licensee's name, signature, license number, license expiration date, the client's name and address, and the date. Supplies travel in an airtight container, and implements must be sterilized and wrapped or stored in individual plastic containers.

Scenario: An Inspection at a Kansas City Nail Bar

During a routine visit, an inspector finds:

  1. a credo blade in a pedicure cart drawer that "nobody uses";
  2. a technician's license posted without a photograph;
  3. nippers stored loose on an open towel after being sprayed with disinfectant;
  4. an uncovered trash can full of nail clippings.

Each finding violates a specific rule. Possessing the credo blade violates 11.020(2)(L) even though it was not used. The license display violates 10.010(3)(B). Spraying the nippers does not meet the immersion and covered-storage requirements of 11.020(2)(D). The uncovered trash violates 11.020(2)(I). To fix them, the owner removes the blade, attaches a current photo to the license, cleans and immerses implements for at least five minutes before storing them in a covered container, and uses lidded waste receptacles at every station.

Test Your Knowledge

Under Missouri's cosmetology sanitation rule, what is the minimum requirement for disinfecting a cleaned metal cuticle pusher between clients?

A
B
C
D
Test Your Knowledge

An inspector finds an unused credo blade in a pedicure station drawer. The technician says it is never used on clients. How does Missouri's rule treat this?

A
B
C
D
Test Your Knowledge

Which license display practice meets Missouri's establishment rules for an operator license?

A
B
C
D