It won't help at all. The layer of chemical is ultra-thin so does nothing to prevent heat loss from conduction or radiation. It only prevents heat loss via evaporation, but a regular solar cover eliminates evaporation already so there is no benefit to adding the liquid solar cover product. If you want better insulation, then use a better solar cover that is thicker, especially in terms of larger bubbles (greater thickness from bubble end to top of cover). The insulation is provided by the still air trapped in the bubble and in between the bubbles. You could add an additional insulating foam cover on top of it, but it would need to be waterproof from rains (you don't get much rain where you live so might be OK).