The FDA lists several risks from tattoos on its website: Infection, Allergies, Scarring, Granulomas, and MRI complications. However, tattoo inks are regulated as cosmetics in this country, which means that there is no federal agency that reviews, or approves, tattoo inks. A study in Lancet revealed titanium, barium, aluminum, and copper are predominantly used as colorants in tattoos, and there is little scientific information about the lifetime internal exposure to these ingredients. Monona Rossol, industrial hygienist and president of Arts, Crafts & Theater Safety, Inc., will discuss the latest study on what is known, and what is unknown, about the safety of tattoos.