"Tattoo inks today are permanent because of the fact that the dye molecules are too big for your body's immune system to take away," explained Anthony Lam, another team member.

Having an angiogram or a procedure with a large load of contrast dye is a risk factor for developing acute renal insufficiency, or in some cases permanent renal insufficiency.

Permanent color dye, Temporary hair color dye, semi-permanent color dye etc.