WetCoat Spray Hydrophobic Booster Spray & Rinse Sealant 500MLPlatinumKnight Wetcoat is a spray on rinse off sealant that is designed to boost protection and gloss within minutes. It can be used over existing coatings or sealants to add more protection, or even applied to an uncoated surface to offer immediate protection. The effect is nearly instantaneous, with the surfaces becoming extremely hydrophobic, beading water and glossy straight after rinsing.