What makes LVR 403 and LVR 404 differ to be used for light or dark colored vehicles? I have a small shop and recently purchased LVR 404, which I know is geared towards lighter paints but is it necessary to have both or would 404 work as good with dark vehicles as it does with lighter colors?

403 Foam Pad Polishing Glaze and 404 Helios Polishing Glaze:
403/404 is an acrylic resin based polishing GLAZE. This particular school of thought is how Brian from Apex Detailing thinks. He is a huge proponent for protecting the vehicles natural clear coat at all costs. He likes the acrylic feature to fill in imperfections more than he likes to do a “true” paint correction by using abrasives to remove sand scratches, swirls, etc..
403 and 404 “work” the same way, but are tailored for darker or lighter colored cars respectively. 404 can indeed be used on darker colored cars, just as 403 can be used on lighter colored cars. The only reason why you don’t, is because you lose out on the acrylic “filler” properties each of these products possess. You can use the product on any colored car, but is you have serious paint correction issues, you want to be more color specific. Otherwise, both will leave an amazing shine regardless of color.
That would be the biggest differences between our 403/404 and our 367 ICE Polish. 367 ICE Polish and LVR 496 Finale are polishes and one uses micro-abrasives and silica fluids to effectively, physically, remove paint imperfections while the other uses silica and buffing lubricants to get to the same results.. The end results are the same, but the method in which you get there are vastly different. Both will produce a deep, brilliant gloss, but the road traveled to get there are pretty different.

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