Originally Posted by adukart

Not particularly. What armor-all does is block uv light. Well todays plastics and vinyl are more resistant to uv deterioration. But since armor-all is silicone based it traps heat like a greenhouse deteriorating it that way, plus the shine creates more of a reflection on the windscreen possibly creating visual impairment. What it does is dries out leather and break down the protection (new leathers for the most part are sealed from the factory, but not all). For leather stick with a quality conditioner. Now you can use a water based dressing that doesn't create such a greenhouse effect and is less shiny (or more shiny just remember it reflects in the windshield more) while blocking UV such as this: http://www.chemicalguys.com/ProductD...ode=TVD_201_16.
I have found armor-all to be good at reconditioning rubber that is not exposed to sunlight such as the door seals. Even helps to keep them from sticking shut in the winter.