For those of you who MUST do detail work in this hot weather, you could try using a large cooler with freezer packs for your products, especially carnauba waxes if you have to have them outside. I know it looks stupid, BUT if you have literally hundreds of dollars invested in these products, why not protect them. Yes, the bottles and containers will get wet from ambient humidity condensation once you take them out, so some old cotton hand towels may needed to wipe them off. Just a suggestion.
That leads to another question about those of you who do use carnauba waxes in hot, humid weather: do you use a cold-water mist/spray bottle after applying the wax to the vehicle surface?? I think Scottwax in Texas did this with some success to help "set-up" the wax and keep it from getting cloudy or hazy during wipe-off and removal. Yes, you go through A LOT of towels during removal, but you do end up with a "clearer" finish, even if you are working in a shaded area like a garage, sun shade tent or awning, or under shade trees.
