There are 2 sorts of liquid, Asphalt emulsion and Coal Tar. Emulsion will rejuvenate asphalt. This acts similar to a wax to automobile paint, it restores the first product and keeps the asphalt strong.2. Fixing Cracks: Upcoming, any cracks or holes need to be stuffed and fixed right before sealcoating, to make sure a easy and perhaps surfaceAsphalt