The innovative nozzle and valve technology, combined with its two internal chambers, ensure the right ratio is mixed every time. Sprays like a gun with a broader spray pattern than conventional aerosols and no mess to clean up. You\'ll achieve professional results from an easy-to-spray aerosol. Application: Before activating, shake aerosol vigorously for 1 min. Take red button from cap. Rotate aerosol 180 degrees and attach button to pin on aerosol bottom. Place aerosol on firm ground upside down. Press red button with the ball of your hand until stop is reached. After activating, shake aerosol again vigorously for 2 min. Pot life 48 to 72 hours at 68 degreesF. FAQ: Q: Can the Eastwood 2K paint be re-used if it is activated or is it a one time use? A: The 2K products have a limited usable life once the seal to the hardener is broken. The principle behind the 2K products is that you mix a hardener into the paint. The hardener makes the paint harder and more resistant to scratches and chemicals. So when you break the seal in the can introducing the hardener into the paint, the hardener begins to do what it is designed to do, harden the paint. This is done by a chemical reaction so it does not have to be introduced into the air for it to dry/harden. So once the seal is broken you have to use the paint within 24 to 48 hours before the paint in the can is hardened.