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    InkKiln

    InkKiln Glossary

    Plain-English definitions for UK tattoo, piercing, PMU and SMP terminology, from statute names to studio slang.

    A

    • ACAS

      Advisory, Conciliation and Arbitration Service.

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    • ACAS Early Conciliation

      Pre-tribunal process where ACAS contacts both sides and tries to help them settle an employment dispute without a hearing.

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    • Aerosolise

      To turn tiny particles or droplets into an airborne mist.

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    • Aftercare film

      Thin breathable adhesive dressing placed over a fresh tattoo to protect it from friction, dirt and excess fluid during early healing.

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    • American Traditional

      Bold old-school style with thick black outlines, limited colour palette (red, yellow, green, blue, black) and simple shading.

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    • Anatomy and physiology (Level 3)

      Foundation knowledge taught in beauty/PMU training, skin structure, healing, circulation, infection risks, basic body systems.

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    • Annex 15 dossier

      Formal restriction proposal document within REACH when authorities want to limit a substance or use.

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    • Annex 17 (UK REACH)

      Great Britain restriction list for substances limited under UK chemicals law.

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    • Annex XVII (EU REACH)

      European Union restriction list for hazardous substances.

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    • Anti-bacterial wash

      Skin cleanser used before or after tattooing to reduce surface bacteria and remove dirt and oils.

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    • Apprentice machine

      Starter tattoo machine used by trainees while learning setup, hand control, voltage and needle depth.

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    • Apprentice NMW

      Apprentice rate of the National Minimum Wage.

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    • Areola reconstruction

      Paramedical tattooing recreating colour, shape and depth of the areola, often after mastectomy.

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    • Autoclave

      Steam steriliser using heat and pressure to kill bacteria, viruses and spores on reusable tools.

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    B

    • BABTAC

      British Association of Beauty Therapy and Cosmetology.

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    • Barrier cream

      Protective cream shielding skin from irritation by friction, moisture or repeated product exposure.

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    • Barrier film

      Disposable plastic wrap used on high-touch surfaces (machine bodies, light handles) to reduce cross-contamination between clients.

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    • BBV

      Blood-borne virus.

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    • Black and grey

      Tattoos created using only black ink diluted with mixing solution to achieve soft greys.

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    • Blackwork

      Any tattoo style using solid black ink as the main element, from heavy blocks and tribal patterns to geometric sleeves.

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    • Blowout

      When tattoo ink spreads under the skin, causing a blurred halo around lines.

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    • Blunt-force trauma

      Crushing/tearing effect when a spring-loaded piercing gun forces a blunt stud through tissue, instead of a sterile hollow needle.

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    • Body modification

      Umbrella term for intentional changes to the body for aesthetic, cultural or identity reasons.

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    • BTAF

      British Tattoo Artists Federation, trade body for professional standards and industry representation.

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    C

    D

    E

    • Employers' liability

      Insurance covering legal liability if an employee is injured or becomes ill because of their work.

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    • Employment status

      Legal classification of a working relationship, employee, worker or self-employed.

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    • Epidermis

      Outermost skin layer, protective barrier.

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    • Event/temporary premises cover

      Short-term insurance for pop-ups, guest spots, conventions and non-permanent trading.

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    • Excess (insurance)

      Amount the policyholder must bear first before the insurer pays the rest of a covered claim.

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    • Eyeliner tattooing

      PMU procedure implanting pigment along or above the lash line to create eyeliner effect without daily makeup.

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    F

    • Fade-then-cover

      Staged approach where an unwanted tattoo is lightened with laser before doing a cover-up, giving the artist more design options.

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    • Failure to notify

      Tax phrase where someone required to tell HMRC about a tax liability did not on time.

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    • Finance Act 2009

      UK tax act containing the modern penalty framework for inaccuracies and failures related to HMRC obligations.

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    • Finance Act 2017

      UK tax act introducing or amending tax measures including parts of the Making Tax Digital framework.

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    • Fine line

      Style using very thin needles and low-profile outlines to create delicate minimal designs.

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    • Flash

      Pre-drawn tattoo designs displayed in books, binders or on studio walls.

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    • Folliculitis

      Inflammation/infection of hair follicles.

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    • Foot pedal

      Floor switch starting and stopping tattoo machines while the artist keeps both hands free.

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    • Forceps

      Metal gripping tools used to handle small items without touching directly.

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    • FUE/FUT scar coverage

      Using SMP or paramedical tattooing to reduce visible contrast of scars left by hair transplant procedures.

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    G

    H

    I

    • Illustrative

      Style borrowing from drawing and printmaking (pen-and-ink, etching, comics).

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    • Immunoglobulin

      Another word for antibody, protein made by the immune system to recognise foreign substances like viruses or allergens.

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    • Implant-grade jewellery

      Jewellery made to recognised implant material standards (ASTM F136 titanium, compliant steels).

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    • Implant-grade steel (ASTM F138)

      Stainless steel standard for medical implants and quality body jewellery.

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    • Implant-grade titanium (ASTM F136)

      Medical-grade titanium alloy for body jewellery.

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    • Indemnity insurance

      Cover protecting against certain financial losses or legal liabilities by compensating the insured up to the policy terms.

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    • Ink cap

      Small disposable cup holding tiny amount of tattoo ink or PMU pigment during a procedure.

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    • Intoxication exclusion

      Policy term excluding or limiting cover where alcohol or drugs are involved.

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    • Irezumi

      Japanese term for tattooing; in Western use refers to traditional full-body Japanese work with koi, dragons, tigers and waves.

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    J

    K

    L

    • Lash line enhancement

      Subtle PMU treatment placing pigment within the lash line for darker, fuller lash illusion.

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    • Latex sensitisation

      Sensitivity/allergy to natural rubber latex.

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    • Letter before action

      Formal letter before court proceedings setting out the dispute, basis of claim and what's wanted.

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    • LGMPA 1982

      Local Government (Miscellaneous Provisions) Act 1982.

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    • Linework

      The structural framework of a tattoo, outlines and internal lines defining shapes before shading or colour.

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    • Lining

      The process of tattooing outlines using liner needle groupings and specific machine settings.

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    • Lining needle

      Needle grouping designed for crisp outlines rather than broad shading.

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    • Lip blush

      Cosmetic tattoo adding soft colour and shape definition to lips, not heavy lipstick effect.

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    M

    • Magnum needle

      Wider tattoo needle grouping for shading, blending and packing larger areas.

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    • Making Tax Digital (MTD)

      HMRC's programme for digital tax records via compatible software.

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    • Mandala

      Circular often symmetrical designs built from repeating shapes, petals and geometric patterns.

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    • MGA

      Managing General Agent.

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    • Micro-realism

      Very small highly detailed realistic tattoos featuring miniature portraits or scenes.

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    • Microblading

      Manual PMU brow technique using a handheld blade tool to create hair-like strokes by depositing pigment.

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    • Mill certificate

      Document from the metal producer confirming composition and standard of a material batch (titanium, steel).

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    • Mutuality of obligation

      Status test concept about whether one side is obliged to provide work or pay, and the other obliged to do the work.

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    N

    • National Living Wage

      Statutory minimum hourly rate for workers aged 21+ in the UK.

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    • National Minimum Wage

      Legal minimum hourly pay for eligible workers below NLW age, and for apprentices in the relevant category.

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    • Needlestick injury

      Accidental puncture from a needle or sharp possibly contaminated with blood.

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    • Negative space

      Bare un-inked skin deliberately left in a tattoo design to create contrast or shapes.

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    • Neo-Traditional

      Evolution of American Traditional keeping bold linework but adding richer palettes, more shading and illustrative detail.

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    • New School

      Cartoon-inspired style with exaggerated proportions, thick outlines and bright neon-level colours.

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    • NHBF

      National Hair & Beauty Federation.

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    • Nickel release

      Amount of nickel that can leach out from a metal item over time when in contact with the body.

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    • Niobium

      Pure nickel-free metal used in quality body jewellery.

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    • Nitrile gloves

      Disposable protective gloves widely used in tattoo studios.

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    • No-fault claim

      Claim where the claimant says they were not responsible for the incident, or a loss handled without proving blame in the ordinary sense.

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    O

    • OAPA 1861

      Offences Against the Person Act 1861.

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    • Occurrence basis

      Policy covering incidents that happen during the policy period, even if claim is made years later.

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    • Ombre brows

      PMU brow style shading from softer/lighter at front to darker/defined at tail, mimicking a makeup gradient.

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    P

    • Packing

      Technique of saturating skin with solid colour or black using slower passes and tighter needle movements to avoid patchiness.

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    • Paramedical tattooing

      Specialised tattooing for restoration or camouflage, scars, stretch marks, areolas, scalp.

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    • Patch test

      Checking whether a person reacts to a product by applying a small amount before full treatment.

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    • PDTT training

      Prepare, Design, Tattoo and Touch-up training framework language in PMU education.

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    • Pen-style machine

      Tattoo or PMU device shaped like a thick pen with motor and stroke in a single body.

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    • Personal allowance

      Amount of income a person can earn each tax year before paying income tax.

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    • Picosecond laser

      Lasers delivering energy in extremely short bursts, shattering tattoo pigment into smaller particles for more efficient removal.

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    • Pigment Blue 15:3

      Blue colourant restricted under both EU REACH 2020/2081 and UK REACH Annex 17 Appendix 13 at 0.1% by weight.

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    • Pigment dispersion

      Process of evenly suspending pigment particles in a liquid carrier so the ink deposits consistently.

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    • Pigment Green 7

      Green tattoo-ink pigment restricted under both EU REACH 2020/2081 and UK REACH Annex 17 Appendix 13 at 0.1% by weight.

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    • Pigment migration

      When tattoo or PMU pigment travels outside the intended area, creating a blurred edge.

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    • Polynesian

      Styles rooted in Pacific Island cultures (Samoan, Hawaiian, Maori).

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    • Portrait

      Tattoos aiming to capture a recognisable likeness of a person or animal.

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    • Powder brows

      PMU brows using a machine for soft pixelated shading like brow makeup, not individual hairs.

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    • Power supply

      Unit feeding and regulating electricity to the tattoo machine.

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    • Professional indemnity

      Insurance covering claims that a business caused loss through professional negligence, error or bad advice.

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    • Public liability

      Insurance for legal liability for accidental injury to third parties or property damage from the business's activities.

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    • PUWER

      Provision and Use of Work Equipment Regulations.

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    Q

    R

    • Razor (skin prep)

      Single-use razor used in skin prep to remove hair before cleaning and stencil application.

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    • Reactive ink allergy

      Immune reaction to tattoo or PMU pigment, persistent redness, swelling, itching, raised areas.

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    • Realism

      Style making tattoos look like real-life photos using careful shading, contrast and colour rather than hard outlines.

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    • Red/Amber/Green risk tiers

      Traffic-light grouping of treatments by risk so rules match invasiveness.

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    • Renewal review

      Process of checking an insurance policy before renewal, business description, activities, turnover, staffing match real risk.

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    • RFID needle scanner

      System reading tagged needle cartridges or supplies so a studio can log batch details, stock movement or client-use records.

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    • RIDDOR

      Reporting of Injuries, Diseases and Dangerous Occurrences Regulations.

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    • Risk assessment

      Structured look at what could cause harm, how likely it is and what controls reduce it.

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    • Rotary machine

      Machine using an electric motor to turn rotational movement into smooth needle motion.

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    • RQIA

      Regulation and Quality Improvement Authority.

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    • RSI

      Repetitive strain injury.

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    S

    • Saline removal

      Salt-based solution tattooed into skin to draw out pigment over time.

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    • Scalp micropigmentation

      Technique tattooing tiny dots into the scalp to mimic hair follicles or add density to thinning hair.

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    • Scar camouflage

      Paramedical tattoo technique using matched pigment to reduce contrast between healed scar and surrounding skin.

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    • Schedule 19 HCA 2022

      Schedule 19 to the Health and Care Act 2022.

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    • Script

      Lettering tattoos from tiny minimalist words to large calligraphic phrases.

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    • Self-employed

      Someone working for themselves, taking on business risk and handling own tax.

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    • Semi-permanent skin colouring

      UK local authority law term for micropigmentation and similar cosmetic tattoo.

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    • Seroconversion

      Point when a blood test starts to show detectable antibodies or infection markers after exposure.

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    • Shading

      Creating gradients and depth using diluted inks, different needle groupings and varied hand speed.

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    • Sharps bin

      Rigid puncture-resistant container for disposing of used needles, razors and contaminated sharps.

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    • Sharps injury

      Broader term than needlestick, any accidental injury from contaminated sharp object: needles, blades, clinical sharps.

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    • Single-use needle

      Sterile needle intended for one procedure on one client only, then disposed in a sharps bin.

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    • Skin micropigmentation

      Implanting pigment into skin for cosmetic or restorative purposes, overlaps with PMU, scar work, paramedical treatments.

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    • Skin prep

      Preparing the treatment area before starting, cleaning, removing oils, shaving if needed, prep products.

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    • Skin-piercing licence

      Local authority registration or licence for tattooing, skin-colouring or cosmetic piercing.

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    • Skin-prep wipe

      Disposable wipe cleaning the treatment area before stencil transfer or procedure start.

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    • Sleeve

      Large tattoo (or series) covering most of an arm or leg, often tying multiple designs into one cohesive theme.

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    • Solid colour

      Fully saturating an area with a single colour, minimal gaps in healed tattoo.

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    • Splash injury

      Exposure where blood or body fluid enters eyes, mouth, nose or broken skin rather than through a puncture.

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    • Spore test

      Biological test checking whether an autoclave is actually sterilising effectively, including killing resistant spores.

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    • Stencil

      Transferred outline of a tattoo design on the skin, made from stencil paper and transfer fluid.

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    • Stencil paper

      Layered paper used to copy a tattoo design and transfer its outline onto the skin before tattooing.

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    • Stencil transfer fluid

      Liquid or gel applied to skin so the stencil design sticks cleanly and stays visible during early tattooing.

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    • Sterile water

      Water processed to remove living microorganisms.

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    • Stipple

      Creating shading or texture using lots of small controlled dots rather than smooth gradients.

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    • Subcutaneous

      Beneath the skin, usually the fatty layer under the dermis (hypodermis).

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    T

    • Tattoo bed

      Padded bench, couch or adjustable table the client lies or sits on during a procedure.

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    • Tattooing of Minors Act 1969

      Makes it an offence to tattoo anyone under 18 in the UK (medical exception only).

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    • Tebori

      Traditional Japanese hand-poked tattooing technique where needles attached to a wooden handle (nomi) are manually pushed into skin.

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    • Trading allowance

      Tax allowance for small amounts of trading or miscellaneous income.

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    • Traditional

      Classic Western or American Traditional tattooing: bold lines, limited palette, iconic imagery like swallows and roses.

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    • Treatment risk insurance

      Broad market term for insurance responding to claims from carrying out treatments, injury, poor outcome, negligence.

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    U

    V

    • VAT threshold

      Level of taxable turnover above which a business must register for VAT.

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    • Vermilion border

      Visible edge where coloured lip meets surrounding facial skin.

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    • Voiding cover

      Treating a policy as if it never existed, usually because of serious non-disclosure, misrepresentation or fraud.

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    W

    • Waiver of subrogation

      Agreement stopping an insurer from recovering its payout from a third party who may have caused the loss.

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    • Watercolour

      Tattoos mimicking brush-painted art with soft colour washes and minimal black outlines.

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    • Whip shading

      Technique where the artist moves the needle in a flicking motion to create a gradient of dots that fade out.

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    • Wholly and exclusively

      HMRC test for whether an expense is incurred only for the trade.

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    • Wipe reveal

      The moment during tattooing when the artist wipes away excess ink to show freshly completed line, shading or piece.

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    • Worker status

      Middle category between employee and self-employed in UK employment law.

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    • Wound healing stages

      Overlapping phases after injury: haemostasis, inflammation, proliferation, remodelling.

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