LOL, that is ***, buy your self some AS5 for 10 bucks and get 10 times the performance.
I've seen how to make a projector, how to make a wifi range extender and how to make stuff that cost money, but the best thermal pastes are 10 bucks, you are sooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo cheap.
Regardless of saving 10 bucks, that thermal paste would be worse than a layer of air.
Stay away from this stuff!