InkKiln Glossary
Plain-English definitions for UK tattoo, piercing, PMU and SMP terminology, from statute names to studio slang.
A
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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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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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Cartridge needle
Pre-assembled tattoo needle module clicking into compatible grips or pen-style machines.
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CDPA 1988
Copyright, Designs and Patents Act 1988, main UK law covering copyright.
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Cellulitis
Bacterial skin infection of deeper layers and underlying tissues.
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CEST tool
HMRC's 'Check Employment Status for Tax' tool.
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Claims-made policy
Insurance policy covering claims made against the insured during the policy period (not when the incident happened).
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Class 2 NIC
Self-employed National Insurance category protecting NI record.
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Class 3B laser
Laser safety category for lasers hazardous to eyes on direct beam exposure with some skin/fire risk at higher outputs.
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Class 4 laser
Highest and most dangerous standard laser class.
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Class 4 NIC
Profit-based National Insurance charge paid by self-employed via Self Assessment.
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Clip cord
Cable connecting traditional coil machines to the power supply.
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Coil machine
Machine using electromagnetic coils to create up-and-down needle motion.
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Contact dermatitis
Inflammation of the skin caused by contact with an irritant or allergen.
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COSHH
Control of Substances Hazardous to Health Regulations.
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Cosmetic piercing
UK local-authority law term for certain piercing activities regulated alongside tattooing.
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Cosmetic Procedures Licensing (HCA 2022 s.180)
Legal framework created by HCA 2022 s.180 for higher-risk non-surgical cosmetic procedures in England.
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Cosmetic-grade ink
Pigment formulated for permanent makeup rather than standard body tattoo ink.
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Couch roll
Disposable paper sheeting covering a tattoo bed or treatment couch so each client has a clean surface.
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Cover-up
A new tattoo designed to conceal or transform an existing one, usually using darker pigments and bolder shapes.
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CPL filter
Circular polarising filter used in tattoo photography to reduce glare and surface shine.
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CPUTR
Consumer Protection from Unfair Trading Regulations 2008.
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CRA 2015
Consumer Rights Act 2015.
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D
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DBS check
Criminal record check via Disclosure and Barring Service.
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Dental bib
Disposable absorbent-backed sheet used to create a clean working surface for inks and small tools during a session.
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Dermis
Deeper of the two main skin layers, beneath the epidermis.
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DHSC
Department of Health and Social Care.
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Disposable grip
Single-use handle section for a tattoo machine, designed to be thrown away after the session.
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Dotwork
Style using tiny individual dots placed close together or spaced apart to build lines, shading and texture.
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E
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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
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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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Geometric
Style using shapes like lines, triangles, polygons and patterns to build designs.
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Ghosting
Faint leftover shadow or outline after a tattoo is partially removed or heavily faded.
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Granuloma (tattoo)
Inflammatory lump or localised immune reaction around tattoo pigment in skin.
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Green soap
Common tattoo cleanser for skin prep and wiping excess ink during a session.
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H
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Hand-poke
Tattooing method where the artist manually inserts ink with a needle on a handle, no machine.
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HCA 2022
Health and Care Act 2022.
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Hepatitis B
Viral infection affecting the liver.
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Hepatitis B immunoglobulin (HBIG)
Antibody preparation used after certain hepatitis B exposures for short-term passive protection.
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Hepatitis C
Blood-borne viral infection affecting the liver.
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HIS (Healthcare Improvement Scotland)
Healthcare Improvement Scotland.
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HIV
Human immunodeficiency virus.
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HIV PEP
Post-exposure prophylaxis for HIV.
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HIW (Healthcare Inspectorate Wales)
Healthcare Inspectorate Wales.
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HMRC self-assessment
Tax return system used by sole traders and others reporting income directly to HMRC.
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Hybrid brows
PMU brows combining hair-stroke work with soft shading for texture and density.
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Hyperrealism
Style aiming to create tattoos that look even more detailed than a standard photo, with extreme contrast and texture.
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Hypertrophic scar
Raised scar staying within boundary of original wound.
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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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Japanese Traditional
Classic Japanese composition with koi, samurai, tigers and cherry blossoms.
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JCCP
Joint Council for Cosmetic Practitioners.
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K
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Kanji tattooing
Tattoos using Chinese-origin characters from Japanese writing to represent concepts.
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Keloid
Overgrown scar extending beyond edges of original wound.
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L
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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
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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
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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
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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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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
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Q-switched laser
Long-standing standard for tattoo removal delivering nanosecond pulses.
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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
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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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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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UK GDPR
UK General Data Protection Regulation.
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UK REACH
Great Britain chemicals regulation in force from 1 January 2021.
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UKAPP
UK Association of Professional Piercers.
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Ultrasonic bath
Cleaning device using high-frequency sound waves to remove dirt from tools.
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Underwriting
Insurer's process of assessing a risk and deciding whether to offer cover, on what terms and at what price.
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Uninsured loss
A loss not covered by the insurance policy, outside the insuring clause, over limit, within excess, or excluded by wording.
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Universal precautions
Infection-control principle that blood and body fluids should be treated as potentially infectious.
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UV box
Uses ultraviolet light to reduce microorganisms on item surfaces.
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V
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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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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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