Kerry Howley's jewelry is guaranteed to put some hair on your chest. That's because the recent Middlesex University graduate uses, well, actual human locks: her own, plus that of a friend's mother. Glanced from afar, the intricate necklaces sweep across the skin like finely wrought lace or an elaborate tattoo. Look closer, however, and you might feel differently. Hair, according to Howley, is a familiar material we take pride in, yet it becomes a source of aversion once it parts from the body.