The problem with armourall is that it's Distillate (diesel, basically) based. So it cleans well, shines everything up etc.. But it draws the moisture out of the trim. That makes it crack, fade, crumble etc etc.
There are a heap of better products than that out there, and they're usually cheaper too. CRC "So Easy" interior/exterior protectant and cleaner is a good one. I use that a lot. Does plastics, vinyl- The lot. And keeps it looking sharp for months.
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