Woolwax is a solvent-free, lanolin-based undercoating for vehicles that provides long-lasting protection against rust and corrosion from salt and moisture. It forms a thick, waxy, and active film that clings to metal surfaces without drying or cracking, providing protection for several years, especially in enclosed areas. Key features include its high lanolin content for superior adhesion, a proprietary process to minimize its natural wool grease odor, and its ability to self-heal if chipped by road debris