The Double-ice Tattoo is obtained by visiting the Pretentious Artist while wearing the Cold Comforts.
Please allow me to paint your portrait...
Ah, yes, you have some gear made out of double-ice. I was into double-ice years ago, and it was totally cool, but now the scene's kind of ruined since everyone knows about it.
Still, it's cool enough to chill even the warmest depths of the human heart. I shall attempt to capture that in my design.