Types of colourants used in tattoo and permanent make‐up techniques, legal regulations, health, and psychological aspects of tattooing

It is estimated that more than 60 million people in Europe, that is, around 12% of the European population, have at least one tattoo. However, there is still little information on the long‐term effects of tattoos. Inks used for tattooing are a mixture of chemicals, with pigments being the main components responsible for the visual effect. The pigments used are not produced specifically as ingredients for tattooing, but mainly/primarily for the needs of industry, where lower purity requirements and quality standards are acceptable. It is therefore necessary to understand the risks associated with tattoos, but also to implement appropriate legal regulations. The aim of this article was to collect and summarise the results of research conducted so far on the type of colourants used in tattoo ink and to analyze the impact of these on human health. In addition, as part of this work, the current legal acts regulating the concentration limits and composition of inks used in tattooing as well as the psychological aspects of tattooing were collected and presented.