Yes dawn will easily strip a carnauba wax. It's not quite as good at stripping sealants IMO, if I need to strip a sealant I generally wash with dawn then wipe with IPA
istilled water, 1:1.
Or you could do what my hippie (prius driving) neighbor does and just wash your car with dawn, then use simple green as a detail spray... No wonder all his cars look like crap.
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