1.1 Microbiology, Pathogens & Exposure Prevention

Why microbiology is the first safety topic

A Georgia facial bed is a public-health surface. If a comedone extractor still has last hour's sebum, if tweezers that plucked an ingrown hair go back into an unlabeled drawer, or if a steamer jar is wiped with a used towel, the next client can receive someone else's microorganisms. Infection control is the set of practices that interrupt that transfer. In the current Georgia Esthetician Test Taker Guide v1.9, effective 4/28/2026, Safety and Infection Control is 40% of the scored outline — the largest single topic. The test is 75 scored questions plus 10 non-scored experimental items in 90 minutes, closed book. Georgia Rule 240-6-.02(2) still requires 70% on each of the written and practical examinations. This OpenExamPrep chapter is independent study material covering those infection-control topics. It does not claim official approval, review, partnership, or exact equivalence with PSI, the Georgia State Board of Cosmetology and Barbers, or any outline.

Georgia already built the same priority into school hours. Rule 240-16-.02 requires a complete esthetician course of at least nine months and 1,000 hours: 250 Level 1 theory plus 750 Level 2 service application. Of the 250 Level 1 hours, 150 are Professional Practices, 20 are Professional Ethics, and 80 are Business Practices. Students must finish Level 1 with at least 75% before they perform clinical services. Professional Practices must include instruction in bacteriology, cleansing and disinfection; personal hygiene; public health and safety; EPA, OSHA, chemicals, infection control standards, and blood spill procedures; AIDS, HIV, and communicable diseases; methods; and facility hygiene. Level 2 later adds only 5 service-application hours of cleansing and disinfection on implements, facial stations, and waxing stations. The science belongs in Level 1. The clinic hours prove you can run the procedure on a live subject.

Pathogens: four groups you must name and stop

A microorganism is a living organism too small to see without magnification. A pathogen is a microorganism that can cause disease. Georgia's Level 1 list is not a trivia catalog. It is the reason you wash, drape, glove, and refuse a service on broken skin.

Bacteria you will see on exam items and on faces

Bacteria are classified by shape: cocci (round), bacilli (rod), and spirilla (spiral). Cocci that form clusters include staphylococci; chains are streptococci; pairs are diplococci. Many bacteria on normal skin are nonpathogenic in that setting. The same organisms become a problem when they enter through a nick from an extractor, a waxing follicle, or a tweezer puncture. A local infection stays in one area (a pus-filled follicle after a rough extraction). A general or systemic infection spreads through the body — that is outside esthetic scope and is a medical emergency, not a "continue the facial" moment.

Some bacteria form spores. Spores survive drying and many chemical disinfectants. Cleaning plus ordinary immersion disinfection is the Georgia floor for multi-use metal tools. Sterilization (the autoclave option in Rule 240-4-.04) is the method that destroys bacterial life including spores when the device meets the Board's cited steam standards. Do not invent a Georgia "spore test interval" — the rule names the autoclave standards (ANSI/AAMI ST55:2010 or ISO 17665, steam 121°C to 134°C) and does not publish a numeric spore-log schedule for salons.

Viruses, including HIV and hepatitis, in a spa room

A virus is not a complete cell. It hijacks a host cell to copy itself. That is why "wiping the extractor on a towel" does not make a viral exposure safe. Bloodborne pathogens named by the Occupational Safety and Health Administration (OSHA) in 29 CFR 1910.1030 include, but are not limited to, HBV and HIV; HCV is grouped with them in OSHA's public bloodborne-pathogen materials. In a Georgia treatment room the realistic routes are a blood bead during extraction, a wax strip that pulls a scab, a tweezer that nicks the follicle, or a discarded contaminated sharp. HSV on the lip or in a prodrome (tingling) is a reason to decline a facial, wax, or lash service on that area — you are not diagnosing; you are refusing to work on non-intact or infectious-looking skin. HPV warts are not an esthetic extractable; they are a refer-out finding.

Georgia's curriculum names AIDS, HIV, and communicable diseases as required Level 1 subjects. Acquired immunodeficiency syndrome (AIDS) is the late clinical syndrome caused by HIV. You do not ask a client to disclose HIV status as a condition of service, and you do not use a different disinfection recipe "only if you think they might have HIV." Standard Precautions and Universal Precautions exist so you treat blood and certain body fluids as potentially infectious every time. Section 1.4 walks the OSHA and Centers for Disease Control and Prevention (CDC) steps. This section's job is simpler: know that HIV and hepatitis viruses can be present in blood you cannot see, and that broken skin from your tools is an entry and exit portal.

Fungi and parasites: stop, do not "treat"

Fungi love warmth and moisture — a wet towel bin, a steamer jar left with standing water, or a damp facial sponge reused against Rule 240-4-.04's single-use list. Tinea of the face or body is a reason to stop cosmetic work on that skin and refer. Parasites such as lice or scabies are likewise a stop-and-refer finding. Rule 240-4-.02 requires posted wording that all cosmetology services shall only be performed on intact, healthy scalp, skin, and nails. That sentence is exposure prevention written for the waiting room.

How pathogens actually move in a Georgia spa

Contamination is the presence of blood, body fluids, or microorganisms on a surface or implement. Decontamination is the process of removing or killing them (cleaning, disinfection, sterilization — section 1.2). Transmission in a treatment room is usually one of these routes:

• Direct contact: your unwashed hands to the client's face; the client's lesion to your ungloved finger.
• Indirect contact: a multi-use tweezer, comedone extractor, magnifying-lamp handle, or wax spatula that touched one person and then another.
• Droplet or airborne droplets: uncovered coughs over a facial bed; this is why respiratory hygiene sits inside CDC Standard Precautions.
• Bloodborne: parenteral (through the skin) or mucous-membrane contact with blood or other potentially infectious materials (OPIM) as OSHA defines them.

Think of a chain of infection: a reservoir (infected person or dirty tool), a way out (blood, pus, respiratory droplets), a transmission path (hands, extractor, double-dipped wax), a way in (non-intact skin, eyes, mouth), and a susceptible host. You break the chain at the easiest links: hand washing, intact skin only, single-use items discarded, multi-use items cleaned then disinfected, no double-dipping (Rule 240-4-.05).

Georgia exposure-prevention rules that are already on the wall

Rule 240-4-.03 is the general health and safety rule for facilities. Hand washing is required before and between providing services to each client. An anti-bacterial soap is recommended to clean the hands and exposed portions of the arms before services and after smoking, drinking, eating, and using restrooms. That is a Board washing requirement. Do not replace it with a splash of product in the air and a wave. If hands are visibly soiled with product or blood, soap and water is the only method that removes soil so a later disinfectant on a tool, or a later glove, can work.

Practitioners must wear appropriate protective clothing and/or footwear during clinical services to prevent occupational exposure. OSHA is named in the rule as the federal agency that regulates appropriate clothing and footwear, which may include clinical jackets, gloves, and similar outer garments. Clients must wear appropriate clothing and footwear during services; providing a client with a covering is acceptable — that is draping as a barrier, not a spa amenity.

Pets are prohibited except guide and assistance dogs under Title 30 of the Georgia Code. Waste must leave daily; garbage sits in a covered, washable container and is not left overnight. Work stations must be free from food and soiled dishes. Sharps such as razor blades go in a sharps container: stored upright, OSHA biohazard labels, manufacturer's safety-flap lid in place, disposed of when three-fourths (3/4) full. The Georgia Department of Natural Resources and local ordinances regulate disposal of sharps waste.

Rule 240-4-.03(8) is the injury-prevention rule that also prevents blood exposure: licensees shall not use any implement designed to remove layers of skin, including razor-type callus shavers, credo blades, cutters, scrapers, graters, or anything that abrades or removes layers of skin. A "quick shave" of peach fuzz with a credo-style blade is not a clever exfoliation. It is a prohibited wound.

Realistic Georgia treatment-room scenarios

Scenario A — extractor nick. During a machine facial you express a closed comedone and a pinpoint of blood appears. You do not keep working "because it is tiny." You stop the extraction, glove if you are not already gloved, control the bleed with a clean single-use material, follow the exposure steps in section 1.4, and you do not return that extractor to a "Clean Implements" drawer until it has been cleaned with warm soapy water and completely immersed for 10 minutes in an EPA-registered disinfectant (section 1.2).

Scenario B — between-client skip. You finished a 50-minute spa facial, walked the client to the desk, and the next guest is already on the bed. Rule 240-4-.03 still requires hand washing between clients. The 150 Level 1 hours exist so this is automatic, not optional when the book is full.

Scenario C — steamer as a "sanitizer." A coworker hangs tweezers in the steamer plume "to kill germs." Rule 240-4-.04 states that steam devices are not acceptable methods of cleansing and disinfection. The steamer is a treatment machine. It is not a sterilizer.

Scenario D — wax and a cold sore. A lip-wax client has a tingling vesicle at the vermilion border. You decline the service on that skin. You do not "work around it" with the same spatula in the pot. HSV spreads by contact; double-dipping is separately banned in Rule 240-4-.05.

Traps

• Treating the 40% Safety and Infection Control weight as if it were a small "intro" chapter you can skim after makeup
• Confusing Georgia's 1,000-hour / 150 Professional Practices curriculum with another state's hour total (Maryland's PSI guide, for example, uses different training hours; Georgia's hours are in 240-16-.02)
• Calling HIV a bacterium, or calling ringworm a virus
• Replacing required hand washing with a fragrance mist
• Using a credo blade, dermaplane razor sold as a "callus shaver," or any layer-removing implement and labeling it exfoliation
• Assuming a client who "looks healthy" cannot carry HBV or HIV
• Inventing a Georgia numeric pass-rate for infection-control items — PSI publishes domain weights, not a published item-by-item pass rate