I really mean no offense here at all......but I see so many people on these forums falling for every hook line and sinker, for every urban myth out there regarding waxes and detailing that it is down right sad.
First Zaino is a sealant AND a glazing system in that it covers paint imperfections. It is not a polish in the sense that it correct paint imperfections. This is why they recommend some 3M products to remove swirls and such.
Second, multiple coats of wax do nothing, nothing at all, to help your paint. It doesn't give you a deeper shine nor does it give you more protection (synthetic waxes are said to be layerable although the jury is still out on that one).
Third, anytime someone does a black car and uses a "glaze" they have not removed their halo-scratches/swirls but rather they have temporarily hidden them. They then take angle shots in the shade to display their deep gloss and shine!! Wash a black car, spray some QD on it then park it in the shade and people will be in awe of how it looks.
Fourth, there is no reason why anyone needs to clay thier car more than once a year unless they live next to a paint and body shop and overspray gets on their car every day. Clays do contain abrasives so if you wax your car one weekend then the next clay it you have removed all your wax.
Fifth....if you have trouble keeping your black car from water spotting then wash it with RO water, in the cool of the morning or towards sunset. If it comes time to polish your paint then use the least abrasive and time consuming means possible.
Lastly...It is totally ridiculous to use 6 different products to get that "showcar shine" when all that is needed is, at the most, 2 products. One being a paint leveler and another being a finer polish. Then you use the wax or sealant of your choice.
I have most likely worn out my welcome here but I am just trying to show you guys (and gals) an easier, safer and more effective method to detailing. You don't need a shelf full of every paint polish, wax and sealant this side of the equator to make your car look good. Too many people think that shelves and shelves of products make them a better detailer....or worse yet, other people look up to them as "guru's".
Anthony