Tattoo ink dangers: FDA finds bacteria in unopened containers

Getting tattooed carries certain risks. Improper hygiene can be associated with the transmission of diseases. However, dangerous bacteria can appear in the ink even before it is opened.

Scientists have discovered different species of bacteria in new, unopened containers of tattoo and permanent makeup inks. Some of these bacteria grow well under the conditions found in the skin, which can pose a potential health hazard.

Experts from the United States Food and Drug Administration conducted detailed microbiological studies of tattoo and permanent makeup inks available on the U.S. market. Their results suggest that caution is necessary when using these products.

- Our research indicates that even never-opened, sealed inks can contain anaerobic bacteria that grow well in low-oxygen conditions, such as those in the skin. The inks can also contain aerobic bacteria – says Dr Seong-Jae (Peter) Kim, one of the study's authors, published in "Applied and Environmental Microbiology".

-This suggests that contaminated tattoo inks could be a source of infection from both types of bacteria. The results emphasize the importance of monitoring these products for both aerobic and anaerobic bacteria, including possibly pathogenic microorganisms - adds Dr. Kim.

The research showed that about 35 percent of the inks tested were contaminated with bacteria. According to Kim, the inks can be contaminated with both aerobic and anaerobic bacteria, and this is not related to the sterility guarantees.

Dr. Kim also notes that the growing popularity of tattoos in recent years is associated with an increase in the number of complications and adverse effects. "It should be noted that microbial infections constitute just one aspect of these complications. In addition to microbial infections, immunologic complications such as inflammatory reactions and allergic hypersensitivity, as well as toxic responses, represent a significant portion of these issues. In light of our study results, we want to emphasize the importance of continuously monitoring these products to ensure the microbial safety of tattoo inks," the expert stresses.

Scientists plan to continue their research in two directions. First, they want to develop even more accurate and faster methods of detecting bacteria. Second, they intend to more closely analyze the composition of bacterial contaminants, which will allow for the development of more effective strategies to prevent their contamination.