Technical guide for laser operators on the physics of eye protection in tattoo removal: optical density, MPE, nominal hazard zones, and the documented case of bilateral foveal damage from an indirect reflection.

Read the full article: Laser Safety Physics: Optical Density, MPE and Eye Protection in Tattoo Removal

From Poli International, body art material science and safety. poliinternational.com

Red light therapy is photobiomodulation, a non-thermal photon interaction with mitochondrial chromophores. Penetration models put therapeutic dose at one to six millimetres, so a piercing fistula is in range and tattoo pigment sits at the edge. Fluence in joules per square centimetre decides the outcome, and tattoo-specific human evidence is still absent.

Read the full article: Red Light Therapy on Tattoos and Piercings: What Photobiomodulation Really Delivers

From Poli International, body art material science and safety. poliinternational.com

Why medical polymers swell in some liquids and ignore others: Hildebrand solubility parameters, PDMS uptake in oils and alcohols, PTFE crystallinity, extractable siloxanes, and the ISO 1817 / ASTM D471 tests that settle compatibility claims.

Read the full article: Solvent Swelling in Body Jewelry Polymers: Why Silicone Absorbs What PTFE Ignores

From Poli International, body art material science and safety. poliinternational.com

North Devon’s mobile tattoo ban raises the right hygiene questions—but fixed premises alone cannot guarantee safe tattooing or piercing.

Read the full article: North Devon’s Mobile Tattoo Ban Gets One Big Thing Right—and One Big Thing Dangerously Wrong

From Poli International, body art material science and safety. poliinternational.com

Learn how correct piercing angle, tissue-plane marking, movement checks, and jewellery fit reduce pressure, migration, and healing problems.

Read the full article: Piercing Angle Is a Fit and Placement Problem, Not a Number on a Diagram

From Poli International, body art material science and safety. poliinternational.com

Three REACH restriction proposals are in ECHA's 2026 opinion queue: universal PFAS, chromium(VI) oxides and octocrylene. Two reach studio materials, and nickel in skin contact is now on the assessment list for possible restriction.

Read the full article: Regulatory Pulse: The EU's 2026 REACH Restriction Pipeline and the Body Art Question

From Poli International, body art material science and safety. poliinternational.com

A viral $50 neck tattoo promotion tied to Charlie Kirk’s killing exposes why consent, permanence, anatomy, and studio responsibility matter more than attention.

Read the full article: The $50 “Kirkiversary” Tattoo Wasn’t a Tattoo Story. It Was a Consent Failure.

From Poli International, body art material science and safety. poliinternational.com

Tattoo-supply consolidation is tightening buyer leverage. Studios should lock core-SKU terms, compare landed cost, and renegotiate rebates before prices reset.

Read the full article: The Wholesale Reset Is Coming Before the Price Increase

From Poli International, body art material science and safety. poliinternational.com

A viral $50 neck tattoo promotion tied to Charlie Kirk’s killing exposes the gap between attention marketing, client consent, and responsible tattoo practice.

Read the full article: The $50 “Kirkiversary” Tattoo Was Bad Judgment—Not a Technical Innovation

From Poli International, body art material science and safety. poliinternational.com

Asia Pacific is the fastest-growing tattoo machine market, and Korean and Chinese manufacturers are pushing smart motor controllers and adjustable-stroke wireless pens into every price band. This is a technical breakdown of what changed, what it costs, and which specifications actually predict whether a cordless machine holds up under load.

Read the full article: Asia's Wireless Tattoo Machine Race Is Rewriting the Price Ladder

From Poli International, body art material science and safety. poliinternational.com