koch chemie hydro foam sealant 1lKoch Chemie Hydro Foam Sealant 1L Protection doesnt have to be complicated. Koch Chemie Hydro Foam Sealant gives you instant gloss and durable protection in one simple stepright after washing. This advanced wet sealant is applied to a wet vehicle and rinsed off, leaving behind a slick, hydrophobic layer that repels water, dirt, and grime. The result? A cleaner car, easier drying, and a deep, glossy finish every time. Why this works Spray on, rinse off