I am trying to understand some facts in this world of marketing hype. Here's my question / thought: Assuming I am after making my car as "hydrophobic" as possible because I want to make washing and drying as simple as possible. So, I have been reading (and reading and reading) and realized that all the "best" ceramic (nano or whatever) coatings need to be "reloaded" or "topped" to maintain the best water effects or hydrophobic-Ness. The coating lasts a long time, but it sounds like the first thing to go is the hydrophobic nature. So thinking about it if all these coatings need a sealant or topper to maintain the best hydrophobic effect, could I just add the sealant to my synthetic wax? If my goal is just hydrophobic effect, why can't I just just add that? Also, the logical follow up question is what is the most hydrophobic sealant /topper? Exo? Thoughts?