I used the Plasti-dip spray. I had used the Plasti-dip liquid for years and did not (at the time) even know about the spray. I seperated my helmet into the face plate and the bucket itself, masked off holes to prevent over spray, and put a couple of coats on. It cuts down on internal light, reflections on my lenses, noise, rattle, and insulates. I am quite pleased I did it and do recommend it to those I help.