You can still see tattoos on the 5,300-year-old ice mummy Otzi. That’s because tattoo artists use needles to deposit ink in the dermis, the layer of skin under the outer layer (or epidermis). When ...

At 19, Phoenix resident Ryan O’Sullivan got a tattoo of a black and red star . . . on his lower back. “I got a tramp stamp, believe it or not, back before there was such a thing as tramp stamps,” says ...