I noticed layering several layers of carnuba waxes can take away from the crispness and clarity of paint, but can give a soft glowing type look. I noticed this when removing old wax with a paint cleaner. I was actually surprised how shiny and crisp the paint looked naked.
I read one time on another forum where some guy did a test and head measuring equipment from a lab and found out second layer made a wax thicker, but 3rd and 4th layers on made it marginally thicker. After that it was a waste. I started using 2 or 3 coats, then maintaining it with the spray wax product from the same line. For example, now I'm using Zymol Glasur on my one car, so I'm maintaining it with Zymol Field Glaze. If you were to used Nattys, with this method you would use a product like PB QD+. Souverän? Use the Pinnacle Spray with carnuba. I think this makes sense, as it also what most manufacturers recommend.
IMHO anything for than 3 layers/coats within the half life of the wax is probably just a waste of product. Also, it's likely the solvents/chemicals that keep the wax soft in the tub may be dissolving the previous layers of wax when you apply the next "topper" later. I wish there was more scientific/research done on this topic, but 99% of what's out there is subjective or anecdotal information.
Like has anyone really scientifically looked at what happens when you apply a Carnuba over a sealant? I know we think of it as forming 2 distinct "layers". But are the products just mixing on the surface? Are the solvents in the wax removing the sealant? Does any of the nuba stick? Or, does it just all wipe off. Who would really know since a sealant is already down as a first layer. I wish more manufacturers would do some objective testing on things like this and make the information known.
But, who knows. Maybe they know it's a waste and figure more layers sell more product... Sometime you read this or that product can be layered. But, has anyone done any testing and conducted measurements showing layering increases the thickness of the original coat? Or, are they just going by theoretical concepts assuming it will work. Who knows?????
