For the first time I am going to use Liquid Glass. Reading the instructions is unique as they tell you to "sun bake" it for four hours after applying and of course remove all wax prior to applying. It's supposed to rain all weekend here so I'll wait for a sunshine day. I seem to to recall applying this stuff on a black truck tends to streak and if so I think I'll need sun as opposed to humidity because it ill probably streak even more under that ondition. Anyone use Liquid Glass on black paint?