Is tattoo ink harmful to your health?

From the show Qu’est-ce qui se passe quand…?, aired April 19, 2026

We know that tattoo ink penetrates the skin—but how far can it actually travel into our bodies? This is the question raised by Dr. Daniel Barolet in this report originally aired on Radio-Canada. As it stands, the answer is far from simple: the long-term effects on the human body remain largely unknown.