Laser tattoo removal actually causes pigment particles to clump together and grow larger rather than breaking them into tiny bits.
Doctors have always believed that lasers work by shattering tattoo ink into microscopic fragments that the body can then wash away. New nanoscale analysis shows that carbon black pigments actually coalesce and expand when hit by a laser. This surprising physical reaction contradicts the entire fragmentation paradigm that the industry is built on. Instead of breaking down, the ink changes its structure in a way that makes it easier for the immune system to recognize and remove. This discovery could lead to more effective laser settings and faster removal times for people trying to erase old ink.
Phantoms for Nanoscale Characterization of Laser-Pigment Interactions Challenge the Fragmentation Paradigm in Tattoo Removal
ChemRxiv · 10.26434/chemrxiv.15002855/v1
The global rise in tattooing practices and laser-based removal has highlighted the need for a deeper mechanistic understanding of pigment clearance. To date, tattoo removal performed using Nd:YAG picosecond lasers has been predominantly interpreted as a photothermal fragmentation process, based largely on macroscopic and histological observations. However, nanoscale characterization of pigment transformations remains limited. The study introduces a minimal and versatile platform for the nanometr