1. A computer-implemented method to model facial hair and skin, the computer-implemented method comprising: receiving a plurality of multiscopic images depicting at least part of a face of a subject having facial hair; analyzing the plurality of multiscopic images in order to determine correspondences between the plurality of multiscopic images and further determine one or more facial hairs depicted in the plurality of multiscopic images; generating a disparity map based on the correspondences, the disparity map containing one or more disparity values adjusted in directions of improved photometric-consistency and improved surface-consistency, respectively; generating a geometry mesh of the subject, based on the disparity map; generating one or more 3D facial hair segments representing the determined one or more facial hairs; generating a 3D model of facial skin underlying the one or more facial hairs, based on the generated one or more 3D facial hair segments and by operation of one or more computer processors; and generating a 3D model of the subject, based on the geometry mesh, the one or more 3D facial hair segments, and the 3D model of facial skin.