To achieve the final look there was a lot of testing involved, such as playing with the balance of hair stiffness. The toupee was created entirely in Houdini using proprietary grooming and simulation tools, which meant that the grooming, simulation and rendering was in one software package, allowing for quicker iterations and more efficient workflows. Upfront testing and look development helped to shape and speed up the finishing as most of the big decisions, in terms of the look and movement, were approved in advance of the shoot.