Russell has an autoimmune disorder called dermatographic urticaria that, though painless, makes welts appear on her skin when it’s lightly scratched. So she takes dull implements (knitting needles, for one) and writes or draws intricate patterns on her legs, arms, stomach, and elsewhere, then documents the results. Each "skin tattoo" lasts about half an hour—just long enough to be photographed.
Creepy? I guess. But it’s also gotta be every starving artist’s dream. Just think: She’ll never have to spend money on canvases or paint.