My mom is in to Stampin' Up in a big way and part of her arsenal of craftiness is this stuff called Crystal Effects. I snagged a mostly-used up bottle from her and use it to make lenses on grilles that have molded in headlights. It is really thick so it doesn't flow far (if at all). The bottle isn't very helpful, just says "Clear Craft Lacquer" and "Acid free, Nontoxic, Washable". As for the stuff actually is...