"The deposition of color ... the ink. The quantity and distribution pattern of the liquid components in the body has not yet been investigated. For the study, 24 volunteers received a tattoo ...

These pigments give ink bright, vivid colors, but over time they ... an experienced and trained artist who follows best practices for hygiene and tattoo aftercare.

Plus, the tattoo ink itself may have ingredients that can trigger an allergic reaction or prove harmful to one's health. "Different colors are created with variations in pigment and dilution ...

The study also monitored how much tattoo ink was used in each session. On the one hand, the bottles of ink were precisely weighed before and after the session. On the other hand, all the needles ...