AEROPAK Black Back is ideal for bumpers, side & window trims, side mirrors, mud flaps, roof rails, door handles, plastic wiper arms and more. It offers a layer of UV protection unlike other products that just dye the plastic parts or sit on top of the surface. AEROPAK Black Back bonds into the plastic to help it last longer and to rejuvenate sun damaged, unpainted exterior textured plastics to a rich, dark finish. Lasts for up to a year on most hard ABS plastic, textured trims, and longevity is dependent on the plastic type and quality of it