Look into the fate and effects of tattoo pigments in human skin

The increasing prevalence of tattoos provoked safety concerns with respect to particle distribution and effects inside the human body. We used skin and lymphatic tissues from human corpses to address local biokinetics by means of synchrotron X-ray fluorescence (XRF) techniques at both the micro (μ) and nano (ν) scale. Additional advanced mass spectrometry-based methodology enabled to demonstrate simultaneous transport of organic pigments, heavy metals and titanium dioxide from skin to regional lymph nodes. Among these compounds, organic pigments displayed the broadest size range with smallest species preferentially reaching the lymph nodes.

 Roshi Ensei Lifts a Heavy Bean Utagawa Kuniyoshi Public domain, courtesy Wiki Commons Images PD-1996

Roshi Ensei Lifts a Heavy Bean Utagawa Kuniyoshi Public domain, courtesy Wiki Commons Images PD-1996