Umberto Giannini Curl Whip Curl Activating Mousse. Definition mousse for weightless, flexible, frizz-free curls. 200ml / 6.7 US FL OZ. New condition. This product is a curl activating definition mousse designed to provide weightless, flexible hold and a frizz-free finish for curls. It is formulated to enhance curls and reduce frizz, giving a matte/natural finish. The mousse aims to transform undefined hair into bouncy, voluminous curls without a crunchy feel. It is suitable for waves, curls, and coils that need definition and bounce