Sanitation, Disinfection, and Safety Practices
The three levels of control
Every safety question on this exam resolves to one of three levels. Sanitation is the lowest level - mechanical cleaning that removes visible debris and reduces (not eliminates) microorganisms. Disinfection destroys most pathogenic organisms on nonporous implements and surfaces but not necessarily bacterial spores. Sterilization destroys all microbial life, including spores, and is required only for items that penetrate skin or contact blood.
Which item takes which level
Nonporous implements that touch intact skin - combs, brushes, metal tweezers, nail tools, capes - require disinfection after each client, typically with an EPA-registered hospital-grade tuberculocidal disinfectant used at the label dilution and contact time. Porous items that cannot be disinfected (cotton, wooden sticks, sponges, paper towels) are single-use and discarded. Anything that breaks skin or contacts blood is single-use or sterilized.
Traps to watch
- "Sanitize" used loosely. A question describing a tool that touched skin is asking for disinfection, not washing.
- Contact time. Disinfectant must stay wet for the full labeled time; wiping it off early invalidates the process.
- Container confusion. "Wet disinfectant" and "dry storage" containers are separate; never store clean tools in disinfectant solution overnight.
- Handwashing vs. sanitizer. Soap and water is the standard before and after every service and after glove removal.
Rule of thumb
Ask: Did it touch skin, blood, or nothing? Skin = disinfect. Blood or broken skin = sterilize or discard. Nothing = sanitize. Then confirm the product label matches that level.