Found some informative information regarding carnuaba waxes and thougt of sharing it with dc members.
Carnauba waxes are a great way to protect your vehicle against the elements. Carnauba waxes often offer stronger protection than sealants do, but will not last as long. Waxes typically last 3 to 8 weeks, where a sealant can last up to 6 months. Carnauba waxes often bead water better than sealants, which makes your vehicle easier to maintain. Carnauba waxes are what you want to use when you want the absolute wettest finish possible.
Layering and Cure Times
Applying multiple coats or layers of wax can add more protection, gloss and shine to the surface. When you want to apply more than one coat, you have to let the previous coat fully cure. Assuming you apply the wax nice and thin, the cure times will range from 1 - 24 hours. The exact time will vary depending on the specific wax, how it was applied, temperature, humidity, etc.
Frequency
In general, good carnauba waxes will last anywhere from 3 to 8 weeks. There are many factors that go into determining how long a wax will last. Some of the major factors are if your car is stored in a garage or outside, how many miles are driven, the type of weather conditions your vehicle is exposed to, how well your paint was prepped prior to applying the wax, the frequency of washing your vehicle, and type of shampoo. The key is to re-apply your coat of protection before the previous coat runs out. As you maintain your vehicle, keep an eye out for how well the water beads and sheets off your paint. If water begins to pool and look flat on your paint, then chances are there is little to no protection remaining and it's advised to apply another coat of wax. A good rule of thumb is to re-apply a carnauba once a month (12 times a year).
