13 Oct 2023 --- German researchers have reviewed the levels of carcinogens and heavy metals present in tattoo inks before the implementation of the REACH (Registration, Evaluation, Authorization, and Restriction of Chemicals) framework. Tattooing has evolved into a widely embraced form of body art alongside EU regulations. With 24% of people in Germany sporting tattoos and another 21% contemplating the ink, demand for high-quality tattoo inks has never been more pronounced.