"When Glen [Keane] was doing drawing after drawing, we actually had a baseball cap with 70-foot long strands of string on it so that the animators could run around and see what that feels like. And we photographs…we had women who had never had their hair cut in 20–30 years come in and we looked at how it behaves once it gets past a certain length. What does that feel like? What’s the texture like? And, of course, we were just talking about this with one of the other guys, we had this brilliant team of technicians who were working on the hair for about six or seven years before the release of the film, and right up until the last minute we weren’t sure if we were going to be able to pull it off, because it was behaving so bizarrely. At one point it was looking like fabric, at one point it was looking like string, or synthetic nylon… it didn’t look like hair yet. All these layers that we had to add, like clumping and static electricity and now it just looks like natural, beautiful hair, but the effort behind it is mammoth."