I don't know really but i would bet it's something like the tire spray stuff.

 

You can spray any tire shine product onto them and let it dry without wiping it off. A gel silicone works well also. Both will draw dust like a magnet.

Keith/Bumble

 

Pledge furniture polish it won't dry up and crack your rubber like armorall will

 

It will all attract dust and loose their sheen pretty quick. The car show guys all buff up their cars before the show so i bet if they drove em for a day or two their hoses wouldn't look much better.

 

Thanks for the input folks. Guess I should say that I too enter the carshows and that's the gist of my question. I got some of the tire shine product and put it on new heater hose that I put on today. Looks like whatever they do, it's multiple coats before it gets that high sheen.

Good points about the dust. I may try the pledge and see how that works.

Thanks all

Mike