Thanks for reaching out! This is typically how aerosol containers are designed. The propellant that dispenses the product is a gas. We use 100% natural nitrogen as the propellant, and the space above the liquid is occupied by the nitrogen. The container is 60% liquid and 40% nitrogen to allow the nitrogen to adequately dispense the volume of liquid. The weight listed on the package reflects the fill level of the liquid in the container. Nonetheless, we would still like to report your comments with the rest of our team. When you have a chance, give us a call at 800-308-3279