Laser tattoo removal uses selective photothermolysis to shatter ink particles small enough for your immune system to clear. This guide explains the physics, why different colours need different lasers, and what determines your session count.

Read the full article: Laser Tattoo Removal: Selective Photothermolysis Explained

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

A chemist's breakdown of what's inside commercial tattoo ink: pigment chemistry, carrier solvents, additive safety profiles, and which ingredients have the longest track record in human dermal tissue.

Read the full article: What's Actually in Tattoo Ink: A Pigment-by-Pigment Safety Guide

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

A technique-level reference matching tattoo needle configurations to voltage ranges, hand speed, and stroke length for clean lining, smooth shading, and dense colour packing.

Read the full article: Tattoo Needle Voltage Chart by Configuration & Stroke Guide

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

What the clinical evidence says about tattoos and piercings during pregnancy: immune system changes, infection risk thresholds, pigment safety unknowns, and the trimester-by-trimester risk profile.

Read the full article: Tattoos & Piercings in Pregnancy: 2nd Trimester Safety

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

Why no topical cream can remove tattoo pigment from the dermis: the chemistry of pigment encapsulation, the depth problem, and what the FDA, MHRA, and dermatology literature actually say about at-home removal products.

Read the full article: Tattoo Removal Creams: Why TCA Can't Remove Dermal Ink

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

Luxembourg's market surveillance authority ILNAS has withdrawn tattoo inks from the market in its 2025 annual report, citing safety violations under the EU REACH restriction (EU 2020/2081). The withdrawals confirm that three years after the full compliance deadline, non-compliant tattoo inks are still circulating in the EU single market—and enforcement agencies are now systematically removing them.

Read the full article: Luxembourg Pulls Tattoo Inks From Market—2025 Surveillance Report Finds REACH Violations

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

Platinum-cured vs peroxide-cured PDMS explained: why medical-grade silicone is nickel-free, plasticizer-free, and autoclave-stable, with practical verification standards for piercing studios and jewelry buyers.

Read the full article: Silicone Biocompatibility: The Polymer Science Behind Body Jewelry

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

A New York City tattoo studio is challenging South Carolina's ban on face and neck tattoos in federal court, arguing the state's restrictions violate the First Amendment by treating tattoo art as unprotected conduct rather than expressive speech. The Pacific Legal Foundation represents Tiny Zaps in a case that could reshape tattoo regulation across the United States.

Read the full article: South Carolina Face and Neck Tattoo Ban Faces First Amendment Challenge in Federal Court

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

Side-by-side comparison of EU REACH, UK REACH, and US FDA/state-level regulation of tattoo inks, piercing jewellery materials, and studio hygiene standards. Covers pigment restrictions, nickel limits, sterilisation requirements, and what the January 2026 EU amendment changed.

Read the full article: Regulatory comparison: EU, UK and US body art material standards

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

The epidermis, dermis and hypodermis as the working substrate for every tattoo and piercing. How skin layers determine needle depth, placement accuracy, healing outcomes, and long-term stability. A clinical reference for practitioners.

Read the full article: Dermis Piercing & Tattoo Skin Layer Diagram: Depth Guide

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