John Swierk is an assistant professor of chemistry at Binghamton University, State University of New York. Tattoos are an incredibly common form of permanent self-expression that date back thousands ...

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Commercial tattoo and permanent makeup inks are too often contaminated with microbes that can lead to infection, warn investigators of a first-of-its-kind study testing the products. When US ...

Tattoo ink doesn’t just sit inertly in the skin. New research shows it moves rapidly into the lymphatic system, where it can persist for months, kill immune cells, and even disrupt how the body ...

Today’s youth are more colorful than their parents, at least when it comes to permanent body art. Once considered taboo in mainstream cultures in the US and Europe, tattoos are more accepted socially ...

The Food and Drug Administration has been warning for years that some tattoo inks are brimming with bacteria—a large assortment that, when injected into your skin, can cause inflammatory reactions, ...