Wet on damp means to apply a liberal, uniform coat onto the wood substrate, and then within 10 to 15 minutes, return to that section and apply a second coat while the C2 Guard is still slightly wet or damp. This is recommended for three reasons: First and foremost, this type of application ensures that the maximum amount of nanoparticle polymers penetrate deep into the cellular structure of the wood and provide the water-shedding benefit you want to achieve. Second, it insures there are absolutely no “misses” in your application. Total coverage is required for the product to perform at its expected high-functioning level. Third, when applying tinted C2 Guard for wood, the wet-on-damp application allows you to have a more even distribution of the color across the substrate.