As scientists study safety of tattoo ink, Europe bans two widely used pigments

Tattoo artists in Europe are fighting a new ban on two commonly-used green and blue pigments, saying that losing these ink ingredients would be a disaster for their industry and their art. Meanwhile, in the United States, where about a third of Americans have a tattoo, tattoo ink is almost completely unregulated and there’s little known about what’s in tattoo ink. Some artists here say the European restrictions don’t make any sense.