Woolwax is a lanolin based auto / truck undercoating made from raw woolgrease.. Woolwax has almost no smell. The wool grease odor has been neutralized by a proprietary additive. Woolwax sprays on wet and does not dry.. Woolwax creates a thin lanolin film barrier to keep moisture and oxygen away from the base metal. * Solvent free. Environmentally friendly. * Always active and creeping into inaccessible areas. Woolwax will thicken to a gel film after applied and is very resistant to wash off. * Provides vehicle undercarriage protection for up to 2 years.. * Enclosed areas (doors, frame-rails, rocker-panels, etc., that are not exposed to road-wash will be protected indefinitely (years). This is the advantage of no solvents. There is nothing to dry up and evaporate. Woolwax is a "honey" color, but when applied appears fairly clear. Woolwax is a non-drip formula. We make it to be as thick as possible to resist wash-off, yet still easily sprayable. Woolwax can be applied with most undercoating guns using a pressure of 70-90 psi. Proudly manufactured in U.S.A. Woolwax lanolin undercoating is formulated to be thicker and more resistant to wash-off.