Infection Control, Safety, and Consumer Protection
The three levels
Most missed questions in this domain come from mixing up cleaning, disinfection, and sterilization. Cleaning removes visible soil with soap and water and must happen before any disinfectant touches an implement. Disinfection kills most pathogens on nonporous surfaces using an EPA-registered, hospital-grade product used at the label's dilution and contact time. Sterilization destroys all microbial life including spores and is reserved for items that penetrate skin or contact blood - most salon implements are disinfected, not sterilized.
Name these concepts
Bacterial shapes (cocci, bacilli, spirilla); pathogens versus nonpathogens; viruses such as hepatitis B and HIV; fungi such as tinea; parasites such as pediculosis. Modes of transmission: direct, indirect (contaminated implements, towels, capes), airborne, bloodborne. Standard precautions, PPE, handwashing, and the blood spill sequence: stop the service, glove, absorb, disinfect with a product carrying a bloodborne pathogen or tuberculocidal claim, bag as biohazard waste.
Safety and consumer protection overlap here: an SDS must be on hand for every product, ventilation and electrical safety matter, and clients need a patch test 24-48 hours before an aniline derivative tint, plus informed consent and accurate records.
Traps
A product labeled 'hospital grade' is not automatically acceptable - it must be EPA-registered and carry the specific claim for the task. Porous items (files, buffers, wooden and orange sticks, cotton) cannot be disinfected and must be discarded after one client. Disinfectant does not act instantly; contact time controls. Never top off or re-dilute a disinfectant solution.
Rule of thumb
If it cannot be disinfected, it gets thrown away. Worked example: a client bleeds during a manicure. Stop, glove, absorb with a disposable towel, clean the surface, then apply the EPA-registered tuberculocidal disinfectant for the full label contact time, and discard the file and buffer.