Let's get to the science of it:
Carnuba wax is an old traditional wax; however, with new surfaces and advanced coatings, Carnuba may not be the best application for protection or shine. Carnuba is a natural bees wax and will quickly melt away in climates with high UV. 30 days is typical for the wax to melt away by 50% -80% in high UV areas. Also, there are many waxes and polishes that will easily outlast and outshine carnuba. I have proven this time and time again to many people.
What's the difference between Waxes and Polishes?
meguiars.com: FAQ - What's the difference between polish and wax? (Meguiar's 5-Step Paint Care Cycle)
My favorite is: Liquid Glass
Amazon.com: Liquid Glass LG100 Ultimate Auto Polish/Finish - 16 oz.: Automotive
Then Quick Detailer:
Meguiar's Ultimate Quik Detailer - 22 oz | Detailed Image
If you are really energetic, try doing the Clay-Bar system.
Car Care Products: Car Waxes to Leather Cleaners, Meguiar's the Leader in Car and Surface Care since 1901
Performing a clay-bar on your vehicle will surprise anyone. You take what looks like a piece of modeling clay/putty, kneed it, press some out like your making a small biscut spread (about 4" round), spray on some quick-detailer (keep the surface damp to wet with the detailer) then gently move the clay over the surface. Once the clay is dirty, fold it, re-kneed it, spread it out and repeat. Then polish, then wax, then finish it off the next day with some more detailer.
Use a fine micro-fiber cloth for all applications.
Here is the best part.............................................. ......
All of this is at your local Wal*Mart or auto-parts store