IA Nail Technician key terms

The use of a chemical product registered by the EPA to destroy most pathogenic microorganisms on hard, nonporous implements and surfaces, excluding bacterial spores.

A process that destroys all microbial life, including bacterial spores, on an implement, typically achieved with an autoclave using high-pressure steam.

A lower-level cleaning step that physically removes visible debris, oils, and residue from tools, hands, or surfaces before disinfection or sterilization takes place.

A pressure vessel that sterilizes metal implements with high-temperature steam under pressure; items must be cleaned and dried before loading and pouched for storage.

Disease-causing microorganisms such as hepatitis B, hepatitis C, and HIV that can be transmitted through contact with infected blood or other potentially infectious body fluids.

An infection-control approach in which every client is treated as potentially infectious, so gloves and barrier protection are used consistently regardless of known health status.

Barriers worn to prevent exposure to pathogens and chemicals, including disposable gloves, safety glasses, and a mask or apron when splashing or vapors are possible.

A manufacturer document summarizing a product's hazards, safe handling, first-aid measures, and disposal; the salon must keep current sheets accessible for every chemical used.

Any disease, disorder, or deformity of the natural nail plate; a technician may service healthy-looking nails but must refer a client with signs of onychosis to a physician.

A fungal infection of the nail plate, often showing thickening, yellow-brown discoloration, and lifting from the nail bed; it is contagious and requires medical treatment, not a nail service.

The visible, translucent keratin structure covering the nail bed, produced by the matrix and composed of compacted cells with no nerve endings or blood supply.

The pinkish tissue beneath the nail plate, rich in blood vessels and nerves, to which the plate attaches along the bed and which guides the plate's growth forward.

The living tissue at the base of the nail where new cells are produced and keratinized; damage here permanently affects the shape and thickness of the growing plate.

The whitish, half-moon area at the base of the nail plate where the matrix is visible through the thinner overlying tissue; its size varies naturally between individuals.

The thin layer of dead tissue extending from the proximal nail fold onto the nail plate; it seals the nail against infection and should be softened and pushed back, never cut.

The living skin at the base of the nail plate that forms the proximal nail fold and produces the cuticle; because it is living tissue, it must not be cut during a service.

The thickened area of skin beneath the free edge of the nail plate where the nail separates from the fingertip; it forms a barrier against debris and microorganisms.

The part of the nail plate that extends beyond the fingertip and is filed and shaped during a manicure; it has no underlying tissue and can be trimmed without pain.

An inflammatory skin condition that can cause pitting, ridges, and separation of the nail plate; technicians avoid aggressive services and refer the client to a dermatologist.

A thin first layer applied to the natural nail to improve adhesion of polish, smooth minor surface irregularities, and help prevent staining from pigments.

The final clear layer applied over polish or nail art to seal the design, add gloss, and increase wear resistance; some formulas are designed for fast drying.

A lacquer of pigments, film-forming resin, and solvent applied to the nail plate for color; it air-dries and is removed with acetone or non-acetone remover.

A tool with graduated abrasive surfaces used to smooth the nail plate and create shine; over-buffing thins the plate and should be limited to light surface work.

An abrasive tool for shortening and shaping the free edge; a fine-grit file used in one direction reduces splitting, and files must be disinfected or discarded between clients.

A pre-shaped plastic extension glued to the free edge of the natural nail to add length before acrylic or gel is applied over it.

A thin fabric or fiberglass strip bonded to the nail plate with resin or glue to strengthen the natural nail or repair a break without adding significant length.

A strengthening layer of acrylic, gel, or wrap material applied over the natural nail plate without extending its length, used to reinforce and protect the nail.

The liquid component of an acrylic system, typically ethyl methacrylate, that softens and bonds with polymer powder to form a hardened enhancement when cured.

The powder component of an acrylic system containing finely milled polymer and pigment; it reacts with monomer liquid to create the sculpted nail enhancement.

The proportion of monomer to polymer on the brush, which controls the working consistency of acrylic; too wet causes shrinkage and lifting, too dry causes brittleness.

Separation of an enhancement from the natural nail plate, often caused by moisture, oil, improper prep, or a poor liquid-to-powder ratio; the area must be filed and repaired.

A preparation applied to the natural nail plate before acrylic or gel to improve adhesion and reduce lifting; it must be used sparingly and kept off the surrounding skin.

A light-cured enhancement product containing photoinitiators that harden when exposed to the correct wavelength in a UV or LED lamp; it does not air-dry.

The chemical hardening of a gel product when exposed to UV or LED light; proper curing requires the correct lamp, timing, and thin, even application.

A long-wear polish that cures under a UV or LED lamp and is removed by soaking in acetone; it is applied in thin layers over a base and sealed with a top coat.

A classic design with a sheer pink or nude base and a white or pale smile line across the free edge, often used to make nails appear clean and lengthened.

The curved line where the free edge of the nail meets the pink nail bed, or the painted white tip of a French design; a clean, symmetrical smile line defines a polished look.

A client's agreement to a service after being told its nature, risks, benefits, and alternatives; documenting it protects both the client and the technician.

A condition or circumstance that makes a nail service inadvisable or unsafe, such as an active infection, open wound, or severe inflammation requiring medical referral.

A confidential card or digital file documenting a client's service history, product reactions, allergies, and preferences; it supports safe service and continuity of care.

The legally defined services and tasks a licensed nail technician may perform, which vary by state and exclude medical diagnosis or treatment of nail disease.

The state-issued credential authorizing a person to practice nail technology after meeting education, examination, and application requirements.

Required or voluntary training hours completed after initial licensure to maintain the license and stay current on safety, products, and techniques.