Investigate a variety of black ink markers, and find out why they look black. Blank inks are usually mixtures of a variety of colored ink pigments in liquid solvents. Chromatography is a technique ...

Having been sued in what’s believed to be a first-of-its-kind lawsuit, Kat Von D went about covering herself in black ink.

Kat Von D has covered several of her iconic tattoos with black ink. She first started covering ... designs across her neck ...