I could be completely wrong, but I believe that this tattoo is a depiction of a Rahwana mask. Rahwana, or Ravana is a hindu deity with a very contentious background. To some he is an evil deity, yet to others he signifies knowledge. In most depictions he has 10 heads, but he is known to be shown with only one, like the example below. I mentioned yesterday how well Vincent Hocquet can blend in religious imagery into his abstract pieces, and this shows he can tackle these images on their own. It’s hard to see without zooming in the photo, but the vast majority of this piece is done with stippling, a technique that a number of artists have been using when approaching similar subject matters.