Quote:
Originally Posted by overcoil
It’s probably not that the wax has to be a complete barrier. It’s that the wax has something sacrificial to offer for the atoms (which cause oxidation) to react with that isn’t the clear coat or paint or resin.
Also above and beyond washing, waxing is another form of cleaning acid fall-out that the UV can’t react with and cause damage.
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Clear coat was originally put on cars to be that layer of protection for the cars actual paint. Modern clear coat doesn't fail like it used to anyway and it doesn't need a "sacrificial layer". Wax and sealants do not offer material UV protection period.