We propose a 3D facial animation system in which expressive wrinkles are taken into account and integrated into the process of facial animation. Starting from a reference wrinkle mask in which isolines are aligned with potentially existing expressive wrinkles, we present some techniques for editing the mask and for optimizing transfering the reference mask to another face. We present a user-friendly modeling system to animate the forces associated with the muscles of the face. Then we describe the geometrical modeling of expressive wrinkles and their implementation during motion control.