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NailRush Glossary

Nail Art Glossary

Every nail term explained in plain language — techniques, products, tools, shapes and more. Your go-to reference for the language of nails.

Acetone

Products

A strong solvent used to dissolve gel polish, soft gel, and remove regular lacquer.

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Acrylic

Products

A nail enhancement created by mixing a liquid monomer with a powder polymer to form a hard, durable coating that cures in air.

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Apex

Anatomy

The highest, strongest point of an enhancement — the structural peak that gives a nail its strength and natural-looking arch.

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BIAB

Products

"Builder In A Bottle" — a brush-on builder gel that strengthens natural nails while remaining easy to apply.

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Builder Gel

Products

A thick gel used to add strength, length, and an apex to natural nails or extensions, cured under a lamp.

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C-Curve

Anatomy

The curve of the nail when viewed from the free edge, shaped like the letter C — key to a strong, natural-looking enhancement.

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Capping

Techniques

Sealing the free edge of the nail by running product or polish along the tip to lock in the coating and prevent chipping.

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Chrome Nails

Techniques

A mirror-like metallic finish created by rubbing chrome powder onto cured gel.

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Coffin Nails

Shapes

A tapered nail shape with a squared-off tip, resembling a coffin or ballerina slipper.

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Cure

Techniques

The process of hardening gel products by exposing them to UV or LED light.

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Cuticle

Anatomy

The thin layer of dead skin (technically the eponychium and cuticle) at the base of the nail that seals and protects the matrix.

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Dehydrator

Products

A prep liquid that removes oil and moisture from the nail plate so products bond properly.

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Eponychium

Anatomy

The living fold of skin at the base of the nail that produces and protects the cuticle and seals the matrix from infection.

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Fill

Business

A quick maintenance service that fills in the regrowth area at the base of grown-out enhancements with fresh product.

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Free Edge

Anatomy

The part of the nail that extends beyond the fingertip — the white tip on natural nails.

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Gel

Products

A nail product that stays soft until cured under a UV or LED lamp, producing a flexible, glossy, odor-free finish.

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Gel Polish

Products

A long-wearing colored coating that cures under UV/LED light, lasting two to three weeks without chipping.

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Hard Gel

Products

A strong, non-soak-off gel used to build length and structure, removed only by filing.

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Hema

Products

A common gel ingredient (a monomer) that improves adhesion but is a frequent cause of allergic reactions when uncured product touches skin.

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Keratin

Anatomy

The tough structural protein that makes up the nail plate, hair, and outer skin.

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LED Lamp

Tools

A curing lamp that hardens gel products quickly using LED light, typically in 30–60 seconds.

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Lifting

Conditions

When an enhancement separates or peels away from the natural nail, usually due to poor prep or product application.

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Matrix

Anatomy

The hidden tissue under the base of the nail where new nail cells are produced — damage here can permanently affect nail growth.

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Monomer

Products

The liquid component (EMA) mixed with powder polymer to create acrylic.

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Nail Form

Tools

A disposable or reusable template placed under the nail to sculpt extensions to a desired shape and length.

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Nail Plate

Anatomy

The hard, visible part of the nail made of keratin that rests on the nail bed.

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Nail Prep

Techniques

The cleaning, pushing back, buffing, and dehydrating steps done before product application to ensure long-lasting adhesion.

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Ombre Nails

Techniques

A gradient effect where one color fades smoothly into another across the nail.

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Overlay

Techniques

A layer of acrylic or gel applied over the natural nail for strength, without adding length.

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Polymer

Products

The powder component that combines with liquid monomer to form acrylic.

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Primer

Products

A bonding agent applied to the natural nail before product to improve adhesion and prevent lifting.

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Rebalance

Business

A maintenance service that restructures grown-out enhancements, moving the apex back into the correct position.

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Sculpting

Techniques

Building an extension freehand on a form rather than using a pre-made tip.

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Sidewall

Anatomy

The side edges of the nail where it meets the skin folds — keeping them straight is key to a clean, even enhancement.

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Soak-Off

Techniques

A removal method that dissolves gel polish or soft gel using acetone instead of filing.

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Squoval

Shapes

A hybrid shape that's square with softly rounded corners — durable and flattering on most hands.

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Stiletto Nails

Shapes

A long, dramatic nail shape filed to a sharp point like a stiletto heel.

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Structure

Techniques

The architecture of an enhancement — the apex, C-curve, and balanced thickness that give a nail strength and beauty.

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Tips

Products

Pre-formed plastic nail extensions glued to the natural nail to add length before applying product.

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