It's possible that you are talking about a product called "Skinny Dip" marketed by IMP. It's an aluminized paste that's actually rubbed onto the surface like a paste wax. I've read that the results look great but that it has to be constantly maintained as it picks up fingerprints and such. They were out of business for quite a while but recently ran across their new website. Evidently, they are back up and running.