- Sterilization
- The highest level of decontamination — destroys all microbial life, including bacterial spores, usually with an autoclave (heat and pressure).
- Disinfection
- The salon standard — an EPA-registered, hospital-grade product kills most pathogens on nonporous surfaces, but not all bacterial spores.
- Cleansing (sanitation)
- The lowest level — washing to remove visible debris and most surface germs; the required first step before disinfection, but it kills few pathogens.
- EPA-registered disinfectant
- A hospital-grade product, registered by the EPA, required to disinfect nonporous reusable implements between clients for the full labeled contact time.
- Contact time
- The length of time an implement must stay immersed in disinfectant, per the product label, for the disinfection to be effective.
- Single-use (disposable) item
- A porous item — orangewood stick, emery board, buffer — that cannot be disinfected and must be discarded after one client.
- Multi-use (reusable) implement
- A nonporous tool — metal nipper or pusher — that may be reused after it is cleaned of debris and then disinfected.
- Clean-then-disinfect sequence
- The correct order for a reusable metal implement: clean off all visible debris first, then immerse in disinfectant for the labeled contact time.
- Cross-contamination
- Transferring microbes from one surface, person, or implement to another — e.g., touching a clean tool with unwashed hands.
- Direct transmission
- The spread of infection through person-to-person contact, such as touching an infected area of skin.
- Indirect transmission
- The spread of infection through a contaminated object, such as a shared implement, towel, or surface.
- Pathogen
- A disease-causing microorganism — a harmful bacterium, virus, or fungus.
- Bacteria
- One-celled microorganisms; the harmful (pathogenic) types can cause infection, and they grow best in warmth, moisture, and a food source.
- Virus
- A submicroscopic infectious agent that replicates only inside a host cell; some are bloodborne and a concern after a cut.
- Fungi
- Microorganisms including molds and yeasts; some cause nail and skin infections such as ringworm and onychomycosis.
- Standard (Universal) Precautions
- Treating all blood and body fluids as potentially infectious and using barriers and proper handling to prevent exposure.
- Bloodborne pathogens
- Infectious microbes carried in blood (e.g., hepatitis B, hepatitis C, HIV); the basis for OSHA's blood-exposure rules.
- Exposure incident
- Contact with blood or body fluid during a service; stop, apply pressure with a single-use barrier, then clean and disinfect any contacted tool.
- Hand washing
- The single most important infection-control step — both technician and client wash and sanitize hands before each service.
- Sanitize the work surface
- Wipe and disinfect the tabletop with an EPA-registered disinfectant before each client to remove residue and microbes from the previous service.
- Porous vs. nonporous
- Porous items absorb and trap microbes and must be discarded; nonporous items can be disinfected and reused.
- Covered waste container
- A lined, covered trash receptacle where soiled single-use items (cotton, gauze, paper towels) are discarded.
- MSDS / SDS
- The Safety Data Sheet — manufacturer information on a product's hazards, handling, and first aid; must be available in the salon.
- Ventilation
- Air exchange that removes product fumes and dusts; important for technician and client safety when working with monomers and filings.
- Dust mask / respirator
- Personal protective equipment that limits inhalation of filing dust and product particles at the station.
- Matrix
- The area at the base of the nail where new nail cells are made; injury here can permanently deform or ridge the nail.
- Lunula
- The whitish half-moon at the base of the nail — the visible part of the matrix where cells are still maturing.
- Nail plate
- The hard, visible part of the nail, made of keratin, that rests on and slides along the nail bed.
- Nail bed
- The living skin beneath the nail plate that the plate glides along as it grows; its blood supply gives the nail its pink color.
- Free edge
- The part of the nail plate that extends beyond the fingertip — the part you file and shape.
- Eponychium
- The living fold of skin over the base of the nail plate; it must never be cut.
- Cuticle
- The dead, colorless tissue that sheds from the eponychium and adheres to the plate; this is what you push back and gently nip.
- Cuticle vs. eponychium
- The cuticle is dead tissue you may push and nip; the eponychium is living skin you must not cut.
- Hyponychium
- The thickened skin under the free edge that seals the fingertip against bacteria and fungi — a protective barrier.
- Nail fold (mantle)
- The deep fold of skin in which the nail root is embedded at the base of the nail.
- Sidewall (lateral nail fold)
- The fold of skin on each side of the nail plate that frames and supports the nail.
- Keratin
- The hardened, fibrous protein that makes up the natural nail plate (and skin and hair).
- Nail unit
- All the structures that make up the nail: matrix, plate, bed, cuticle, eponychium, hyponychium, and surrounding folds.
- Onyx
- The technical term for the natural nail plate.
- Contraindication
- A reason a technician should not perform a service or part of it — such as a sign of infection or disease.
- Paronychia
- A bacterial infection of the tissue around the nail (redness, swelling, pus); a contraindication — decline and refer out.
- Onychomycosis
- A fungal infection of the nail — thick, discolored, crumbling, or lifting nails; a medical condition to refer out, never diagnose.
- Tinea pedis
- Athlete's foot — a fungal infection of the foot; a contraindication for a pedicure service on the affected area.
- Onycholysis
- The lifting or separation of the nail plate from the nail bed.
- Hangnail (agnail)
- A small tag of split or torn skin beside the nail; nip only the loose dead piece, and recommend cuticle oil.
- Leukonychia
- White spots or marks in the nail plate, often from minor trauma to the matrix; usually cosmetic.
- Onychophagy
- The habit of bitten nails; a cosmetic condition a technician can help improve, not a disease.
- Furrows (ridges)
- Lengthwise or crosswise grooves in the nail plate; usually cosmetic and can be smoothed by buffing.
- Pterygium
- Abnormal forward growth of living skin over the nail plate; do not cut it — refer out if severe.
- Serve vs. refer out
- Serve healthy nails and cosmetic conditions; decline and refer signs of infection, suspected fungus, or broken, inflamed skin.
- Monomer
- A single, small molecule that can join with others to form a chain; the acrylic liquid is a monomer.
- Polymer
- A substance formed when many monomers bond into long chains; the acrylic powder is a polymer.
- Polymerization
- The chemical reaction that links monomers into long chains, hardening (curing) the acrylic into a solid nail.
- Ethyl methacrylate (EMA)
- The professionally accepted liquid monomer for acrylic enhancements today; gentler and soaks off in acetone.
- Methyl methacrylate (MMA)
- A banned or discouraged monomer that bonds too aggressively, will not soak off, and can severely damage the nail and skin.
- Catalyst (activator)
- A product that speeds up the curing or hardening reaction of a nail system.
- Nail primer
- A product applied before acrylic to improve adhesion between the natural nail and the enhancement.
- Nail dehydrator
- A product that removes surface oil and moisture from the natural nail so the enhancement adheres without lifting.
- Lifting (cause)
- Enhancement separating from the nail, usually caused by oil, moisture, or debris left on the plate before application.
- Cyanoacrylate (resin adhesive)
- The fast-bonding resin used to attach nail tips and to secure fabric wraps to the natural nail.
- Solvent
- A product that dissolves and removes a substance — e.g., acetone removing polish or a soak-off enhancement.
- Acetone
- A strong, fast solvent that removes polish and soaks off enhancements quickly, but is drying.
- Non-acetone remover
- A gentler, slower solvent — the better choice for dry, brittle natural nails doing only a polish change.
- Base coat
- The first polish layer — helps color adhere and protects the natural nail from staining.
- Top coat
- The final polish layer — seals and protects the color and adds shine and durability.
- Cuticle remover
- A product applied at the base of the nail that loosens and dissolves dead cuticle tissue so it can be pushed back.
- Gel (UV/LED)
- An enhancement product that hardens (polymerizes) when cured under a UV or LED lamp rather than by air-drying.
- Under-curing
- Failing to fully cure a gel layer, leaving tacky, weak product and a risk of skin irritation.
- Inhibition layer (tacky layer)
- The sticky surface left on some cured gels that is wiped away with a cleanser at the end of the service.
- Overexposure / sensitivity
- Repeated skin contact with uncured product (especially monomers) that can cause an allergic reaction; avoid touching skin with product.
- Client consultation
- The pre-service step to determine the client's needs and assess the nails, skin, and health before choosing a safe service.
- Nail assessment
- Visually evaluating nail shape, length, and condition to recommend a suitable service and flag anything to refer out.
- Client service record (client card)
- Documentation of services performed, products used, and observations or reactions for safe, consistent future visits.
- Service recommendation
- Tailored suggestions to a client — a follow-up schedule or home cuticle oil — based on the nails' condition.
- Rebooking
- Scheduling the client's next appointment (e.g., a fill in 2–3 weeks) to keep nails maintained and support retention.
- Cuticle pusher
- An implement that gently loosens and pushes back the softened cuticle; held nearly flat to avoid the matrix.
- Cuticle nipper
- An implement with two curved jaws on a hinge used to trim only small tags of loose, dead skin.
- Nail clippers
- The implement used to shorten long natural nails before shaping with a file.
- Nail file (abrasive)
- An implement used to shape and smooth the free edge; single-use files are discarded after each client.
- Buffer
- An abrasive used to smooth the nail surface and remove minor ridges; a porous single-use item.
- Orangewood stick
- A disposable wooden tool used to push tissue or apply product; single-use only, discarded after one client.
- Electric file (e-file)
- A motorized tool to reduce and shape product; keep the bit moving with light pressure to avoid heat and grooving.
- E-file safety
- Keep the bit moving continuously, use light pressure, choose the right grit, and slow the speed near the cuticle and sidewalls.
- E-file overheating
- Pressing the bit hard into one spot builds friction heat that can burn or damage the nail and skin.
- Grit (abrasive coarseness)
- How coarse a file or bit is; coarse removes product fast, while a finer grit protects the natural nail.
- Equipment vs. implement
- Equipment is large and stationary (table, lamp, pedicure basin); implements are hand-held tools (nippers, pusher).
- Pedicure basin
- A piece of equipment that must be cleaned and disinfected before each client and again at the end of service.
- Station set-up
- Disinfect the surface, lay out a fresh towel, clean disinfected implements, and new single-use items before the client arrives.
- Service preparation
- Sanitizing the area and both the technician's and client's hands, then arranging clean supplies before the service begins.
- Covered container
- A clean, closed container that holds disinfected implements ready for use on a sanitized surface.
- Basic manicure
- Remove polish, shape, soften and treat cuticles, buff, then base coat, two thin color coats, and top coat — with set-up and clean-up.
- Filing direction
- File the free edge from each side toward the center in one direction to avoid weakening or tearing the nail.
- Cuticle soak
- Soaking the fingertips in warm, soapy water to soften the cuticle and surrounding skin before cuticle work.
- Pushing the cuticle
- Use light pressure and hold the pusher nearly flat against the plate to avoid digging into the living matrix.
- Nipping dead tags
- Carefully nip only the loose, dead skin tag that remains after the cuticle is pushed back — never living skin.
- Buffing
- Smoothing the natural nail surface and removing minor ridges before polish application.
- Polish layer order
- Base coat, then color, then top coat — the standard sequence for a polish application.
- Thin coats
- Two thin, even coats set faster and resist chipping and smudging better than thick coats.
- Thick-coat error
- Applying polish too thickly keeps it soft and prone to smudging long after the service ends.
- Pedicure
- A foot-and-toenail service; clean and disinfect the basin before and after, and never service over an infection or open skin.
- Foot file / pumice
- An abrasive used to smooth calluses on the foot; single-use or properly disinfected, never used over broken skin.
- Toenail shaping
- Toenails are generally cut and filed straight across to help prevent ingrown nails.
- Hand and arm massage
- A relaxing manicure step; avoid massage over varicose veins, inflammation, or where it is contraindicated.
- Paraffin treatment
- A warm wax dip that softens and conditions skin; avoid on broken skin, rashes, or impaired circulation.
- Nail shapes
- Common shapes a technician files: square, round, oval, squoval, and pointed (almond/stiletto).
- French manicure
- A natural-looking polish style with a pale or pink nail and a white free edge (the smile line).
- Polish remover step
- The first hands-on step when a client arrives wearing color is to remove the existing polish from each nail.
- Hot-oil / conditioning manicure
- A manicure variation that uses warmed oil or lotion to soften and condition dry cuticles and skin.
- Massage contraindication
- A reason to skip or modify massage — e.g., inflammation, recent injury, or a circulatory condition in the area.
- Smile line
- The curved line where the white free edge meets the pink nail in a French or pink-and-white set.
- Nail tip
- A pre-formed plastic tip glued to the natural nail to add length, then blended and overlaid.
- Tip placement
- Apply a tip over no more than about ⅓ to ½ of the natural nail plate for a strong, natural enhancement.
- Blending a tip
- Smoothing away the ledge where the tip meets the natural nail so the seam disappears.
- Well (of a tip)
- The recessed area of a plastic tip that contacts and bonds to the natural nail; pressed to remove air pockets.
- Sculptured nail
- An acrylic nail built on a form to extend past the free edge without using a plastic tip.
- Nail form
- A template fitted under the free edge so a technician can sculpt an enhancement to add length.
- Apex (stress area)
- The thickest part of an enhancement, placed just past the free edge to give strength and a natural arch.
- Acrylic overlay
- Acrylic applied over the whole natural nail for protection without adding length.
- Fill-in (refill)
- Maintenance every 2–3 weeks that files lifted product, blends the ledge, and applies fresh product over new growth.
- Backfill
- On a pink-and-white set, refreshing the white free-edge area as the smile line grows out.
- Fabric wrap
- Silk or fiberglass adhered with resin to reinforce and strengthen weak or thin natural nails.
- Dip system
- Resin plus a powder that hardens chemically without a lamp; avoid double-dipping shared powder (a contamination risk).
- Why fills matter
- New growth and lifting create a moist gap where bacteria or fungus can grow, so enhancements need regular maintenance.
- Tip cutter
- The tool used to shorten an adhered nail tip to length before it is filed and overlaid.
- Soak-off removal
- Removing a soak-off enhancement by dissolving it in acetone rather than prying or forcing it off.
- Post-service implement care
- Clean off all debris, then immerse multi-use metal implements in an EPA-registered disinfectant for the labeled contact time.
- Aftercare advice
- Recommend cuticle oil, gloves for wet or harsh tasks, and returning for fills rather than picking at lifting.
- Discard single-use items
- Porous items (orangewood stick, emery board) cannot be disinfected and must be thrown away after each client.
- Post-service documentation
- Recording services, products, and any reactions on the client record so future visits stay consistent and safe.
- Basin disinfection (end of service)
- Clean and disinfect the pedicure basin or spa per the manufacturer's and state requirements before the next client.