The reuse and valorization of materials derived from deconstructed pavements (Reclaimed Asphalt Pavement, RAP), represent a key strategy to enhance the sustainability of the road sector. However, the aging of the bituminous binder contained in RAP compromises its rheological properties, making the use of rejuvenating agents essential. This research, developed within the framework of the PRIN SMASHit project, aimed to evaluate the effectiveness of three non-petroleum based agents: two intended for application in bituminous mixtures (RA and RB) and a sunflower oil traditionally employed for food purposes (RC), tested for the restoration of the viscoelastic properties of aged binders. The experimental program involved the preparation of bitumen–rejuvenator blends at dosages of 4% and 6% by weight, subjected to standardized aging through the Rolling Thin Film Oven Test (RTFOT) and the Pressure Aging Vessel (PAV).