AR Nail Technician study materials
AR Nail Technician study resources

AR Nail Technician key terms

AR Nail Technician · Get comfortable with the vocabulary.

Sanitation

The first cleaning step that removes visible dirt, oil, and debris from tools, hands, and surfaces using soap or detergent and water before any disinfecting step.

Related: Disinfection, Sterilization
Disinfection

Using a chemical product labeled to kill most harmful microorganisms on nonporous tools and surfaces; it does not reliably kill bacterial spores and is not the same as sterilization.

Related: Sanitation, EPA-registered hospital disinfectant
Sterilization

A process that destroys all microorganisms, including spores, on tools, usually by steam under pressure in an autoclave or by approved dry heat.

Related: Disinfection, Sanitation
Standard precautions

Infection-control habits that treat every client's blood and body fluids as potentially infectious, including handwashing, gloves, and eye protection when splashing is likely.

Related: Sanitation, Disinfection
Safety Data Sheet (SDS)

A manufacturer document listing a product's chemical hazards, safe handling, first aid, storage, and disposal information; it must be available where chemicals are used.

Related: EPA-registered hospital disinfectant
EPA-registered hospital disinfectant

A disinfectant with an EPA registration number and a label claim for hospital use, effective against germs such as Salmonella, Pseudomonas, and Staphylococcus on properly cleaned surfaces.

Related: Disinfection, Safety Data Sheet (SDS)
Nail plate

The hard, visible part of the nail made of keratinized cells that covers the nail bed and protects the fingertip.

Related: Nail bed, Hyponychium
Nail bed

The skin layer directly beneath the nail plate that carries blood vessels and nerves and looks pink through the clear plate.

Related: Nail plate, Nail matrix
Nail matrix

The hidden growing area at the base of the nail where new cells form; injury here can cause ridges, thinning, or permanent nail changes.

Related: Lunula, Nail plate
Lunula

The pale half-moon at the base of the nail plate, made of cells that have just emerged from the matrix and are not fully hardened.

Related: Nail matrix, Eponychium
Eponychium

The living skin fold at the base of the nail that seals the gap between skin and nail plate and helps block bacteria.

Related: Lunula, Cuticle pusher
Hyponychium

The skin under the free edge of the nail that seals the nail bed and helps keep dirt and germs out.

Related: Nail plate, Nail bed
Manicure

A hand and nail service that includes shaping, cuticle care, massage, and usually polish, performed for hygiene and appearance.

Related: Pedicure, Base coat
Nail file grit

A number on a file or buffer that shows how coarse the abrasive is; low numbers remove more material and high numbers smooth.

Related: Blending, Manicure
Cuticle pusher

A metal or wooden tool with a rounded edge used to gently push back the eponychium after softening; it should not cut living skin.

Related: Eponychium, Manicure
Base coat

A thin first polish layer that helps color stick, protects the nail from staining, and creates a smooth surface.

Related: Top coat, Nail polish
Top coat

A clear polish layer applied last to add shine, seal in color, reduce chipping, and help protect the design.

Related: Base coat, French manicure
Pedicure

A foot and toenail service that includes soaking, exfoliation, nail shaping, cuticle care, massage, and often polish.

Related: Manicure, Soaking basin
Callus

A thickened patch of hard skin caused by repeated pressure or friction, often on heels and the balls of the feet.

Related: Pedicure
Ingrown toenail

A nail edge that has grown into the surrounding skin, causing pain, redness, and swelling; technicians should not treat it and should refer the client to a doctor.

Related: Pedicure, Callus
Soaking basin

A bowl or tub used to soften feet during a pedicure; it must be cleaned and disinfected between clients, and disposable liners reduce contamination.

Related: Pedicure, Disinfection
Nail tip

A pre-shaped plastic extension glued to the free edge of a natural nail to add length before shaping and finishing.

Related: Cyanoacrylate, Blending
Nail wrap

A fabric or paper overlay applied with resin or glue over the natural nail to strengthen it or repair a break.

Related: Cyanoacrylate, Blending
Cyanoacrylate

A fast-bonding adhesive used to attach tips and wraps; it can glue skin instantly, so it must be handled carefully and kept off surrounding tissue.

Related: Nail tip, Nail wrap
Blending

Filing and smoothing the seam where a tip or wrap meets the natural nail so the extension looks seamless and resists lifting.

Related: Nail file grit, Nail tip
Monomer

The liquid part of a liquid-and-powder acrylic system that reacts with polymer powder to form a hard nail enhancement.

Related: Polymer, Liquid-to-powder ratio
Polymer

The powder part of an acrylic system, made of fine acrylic particles that mix with monomer to form a workable bead.

Related: Monomer, Liquid-to-powder ratio
Liquid-to-powder ratio

The balance of monomer and polymer picked up on the brush; it decides whether the bead is too wet, too dry, or correct for smooth control.

Related: Monomer, Polymer
Primer

A liquid applied thinly to the natural nail before acrylic to improve adhesion; too much or contact with skin can cause lifting or irritation.

Related: Monomer, Apex
Apex

The slightly thicker area of a sculptured nail over the stress zone that adds strength where the enhancement bends most.

Related: Monomer, Curing
UV/LED gel

A nail product that stays soft until exposed to a matching ultraviolet or LED lamp, which hardens it into a durable coating.

Related: Curing, Inhibition layer
Curing

Exposing gel to the correct lamp for the manufacturer's stated time so it fully hardens; under-curing can cause peeling, service breakdown, and skin reaction.

Related: UV/LED gel, Inhibition layer
Inhibition layer

The tacky, uncured film left on the surface of gel after curing, which is wiped off with cleanser before finishing.

Related: Curing, Gel polish
Gel polish

A long-wearing polish that hardens under a lamp and is removed by soaking or filing, not by ordinary polish remover alone.

Related: UV/LED gel, Curing
Nail polish

A colored cosmetic coating made of film formers, plasticizers, and pigments that dries by evaporation and is removed with solvent.

Related: Base coat, Top coat
French manicure

A classic style with a pale or natural pink base and a crisp white tip line that makes nails look clean and longer.

Related: Nail polish, Top coat
Scope of practice

The specific services and procedures a licensed nail technician may legally perform under state law; doing more can lead to discipline.

Related: Client record, Informed consent
Client record

A written or electronic note of each service, products used, and any reactions or complaints, kept for the period the state board requires.

Related: Scope of practice, Confidentiality
Informed consent

Explaining a service's risks, benefits, and alternatives and getting the client's permission before starting work.

Related: Scope of practice, Client record
Confidentiality

Keeping a client's personal and health information private and sharing it only when the client agrees or the law requires.

Related: Client record