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 ...

You might want to rethink getting a tattoo in the near future. Two types of tattoo inks are being recalled due to contamination with “pathogenic microorganisms,” according to a warning from the U.S.

One in four Australian adults have at least one tattoo, but new research suggests that what's in the ink may pose greater risks than the size and design of the tattoo. Subscribe to our newsletter for ...