Fig. 1. (A) Novel minimally invasive radiofrequency (RF) device. (B) Procedure protocol. 1. Insertion of the needle along the wrinkle course at variable depths from the superficial to mid dermis, depending on the wrinkle type and the filler used. 2. In situ 360-degree rotation (tunneling) performed to create a virtual canal contextually supplying the RF. 3. The procedure is repeated in retrograde through a multi-prick technique along the wrinkle course. 4. Without removing the needle from the injection site, the needle retraces the course, releasing hyaluronic acid through the linear retrograde technique. This technique yields wrinkle smoothing with a long-lasting effect.