INI-SS study materials
INI-SS study resources

INI-SS flashcards

INI-SS · Build recall with a focused review session.

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

Sanitation
A cleaning process that uses soap, water, and friction to remove dirt, debris, and many microorganisms from surfaces and tools; it does not destroy all pathogens.
Disinfection
Use of an EPA-registered chemical at the labeled dilution and contact time to destroy most pathogenic microorganisms on nonporous implements and surfaces, excluding bacterial spores.
Sterilization
A process using heat, pressure, or chemicals that destroys all microbial life, including bacterial spores, on implements; required for items that penetrate skin or contact blood.
Nail matrix
The living growth center beneath the proximal nail fold that produces keratinized cells forming the nail plate; injury here causes permanent nail deformity.
Lunula
The pale, half-moon-shaped visible portion of the nail matrix at the proximal end of the nail plate; its color comes from the thicker, less translucent matrix tissue.
Hyponychium
The thickened layer of epidermis under the free edge of the nail plate that seals the nail bed from the outside and acts as a barrier against infection.
Paronychia
Inflammation or infection of the tissue surrounding the nail, marked by redness, swelling, pain, and sometimes pus; a contraindication for cuticle work and a reason for referral.
Onychomycosis
A contagious fungal infection of the nail causing thickening, discoloration, and crumbling; service is contraindicated and all contact implements must be disinfected.
Onycholysis
Separation of the nail plate from the nail bed, appearing as a white area; causes include trauma, psoriasis, and harsh products. Do not force product under a lifted edge.
Beau's lines
Transverse depressions across the nail plate caused by interrupted matrix growth after illness, injury, or stress; they grow out and are not treated by the nail professional.
One-direction filing
Filing from sidewall to center in a single direction rather than back and forth, which reduces splitting and plate damage on natural nails.
Base coat
A thin first layer applied to the natural nail that protects the plate, improves adhesion of polish, and helps prevent staining from colored polish.
Apex
The highest point of a sculpted nail enhancement, positioned over the stress area about one-third of the nail length from the cuticle, providing strength and shape.
Exothermic reaction
A chemical reaction that releases heat; in acrylic systems, too-wet ratios or thick beads generate excess heat that can burn the client's nail bed.
Stress area
The part of the nail enhancement over the center of the nail bed, between the cuticle and free edge, where stress concentrates and where apex strength is built.
French manicure
A nail design with a white or light tip covering about one-third of the plate and a sheer pink or nude base, with a smile line following the natural free edge.
Color wheel
A circular arrangement of colors used in design; complementary colors sit opposite each other for contrast, while analogous colors sit adjacent for harmony.
Informed consent
A client's documented agreement to a service after being told the products, procedures, risks, and alternatives; required before enhancement removal or use of strong chemicals.
Scope of practice
The legal boundaries of a licensed nail professional's work; diagnosing or treating disease is outside the scope and requires referral to a physician.
Monomer
The liquid component of acrylic systems, usually ethyl methacrylate, that reacts with polymer powder to form a hard enhancement and releases heat during polymerization.
Photoinitiator
A compound in gel products that absorbs UV or LED light and starts the curing reaction; gels do not harden without adequate light exposure.
Safety Data Sheet
A document required for each chemical product listing hazards, safe handling, first aid, and disposal information; must be accessible in the salon under OSHA rules.
Independent contractor
A worker who sets their own schedule, supplies their own tools, and pays self-employment tax; misclassifying an employee as a contractor creates legal and tax risk.
State board
The state agency that licenses practitioners and salons, sets sanitation rules, conducts inspections, and imposes discipline for violations.
Matte top coat
A finishing coat that seals nail art while producing a flat, non-reflective surface; apply over a glossy coat if the design needs extra protection first.
Encapsulation
Embedding glitter, lace, or dried flowers between layers of clear acrylic or gel so the design is fully sealed and cannot lift or trap moisture.
Onychorrhexis
Longitudinal ridges and splitting of the nail plate, often from dryness or aging; treat with moisturizing and avoid aggressive filing or buffing.
Pincer nail
A nail whose sidewalls curve inward and pinch the plate, sometimes causing pain; treat conservatively with filing and refer for correction.
Squoval shape
A nail shape with straight sides and rounded corners, combining the strength of a square nail with the softer look of an oval.
Credo blade
A sharp metal tool historically used to cut callus; it is unsafe and should not be used because it can cut living tissue and introduce infection.
Primer
A liquid applied thinly to the natural nail before acrylic to improve adhesion by etching the plate; it must not contact skin or cuticle.
Hard gel
A gel enhancement that cannot be broken down by acetone and must be removed by filing; soft gel, by contrast, is soaked off in acetone.