What to Use to Clean Yellowed Car Paint?
2 Answers
Apply another layer of wax on the exterior, then remove the oxidized wax and reapply. This method can extend the lifespan of white car paint and make it less prone to yellowing. Polishing is a subtractive process that removes the oxidized layer, revealing the unoxidized white paint underneath. The least recommended option is repainting, which is the worst method. Whether done at a repair shop or a 4S store, even the best paint available will still fall short of the original factory paint.
Car yellowing is usually caused by paint oxidation or dirt accumulation, such as rain and dust deposits. I've personally used specialized car wash liquids, like foam-based ones, by spraying them on and waiting a few minutes to let them soften the stains, then gently scrubbing with a soft brush or sponge, which works very well. For severe yellow stains, adding some polishing compound and applying it in circular motions can remove the oxidized layer and restore shine. The key is to avoid using strong acids or hard brushes to prevent scratching the paint. After washing, make sure to rinse off all water thoroughly and then apply wax for protection, otherwise, UV exposure can cause yellowing again. For daily parking, it's best to avoid areas with direct sunlight, and frequent car washing can effectively prevent this issue. Remember, these steps can be done at home—cost-effective and practical—so there's no need to rush to a car service center.
