Experts have warned that toxic ink used in tattoos that is absorbed by the body could increase the risk of skin cancer.

The study follows up on a separate study conducted by Copenhagen's university hospital’s Jorgen Serup who found that around 13 of 21 commonly used tattoo inks in Europe contained cancer-causing chemicals.
“Millions of Europeans are now being tattooed with chemical substances of unknown origin. Until now, no one has really looked at the risks, and we need to get proper research going in this field. People should be given written information about the inks that are used on them. It may be that, like cigarette smoking, they still choose to take the risk, but they need to be informed”, Serup said.
Source-Medindia