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No. Rubbing alcohol will not damage a car’s paint when used sparingly and in moderation. Diluting rubbing (isopropyl) alcohol to 20% concentration with distilled water is an excellent way to ensure the paint is oil-free before applying a car wax, paint sealant, or ceramic coating. The occasional application of adequately diluted isopropyl alcohol will not cause damage to car paint. Mix one part 70% rubbing alcohol with about three parts distilled water for an effective and safe solution to have in your cleaning kit. Apply to small areas with a spray bottle and remove using a clean microfiber cloth in a circular motion.
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Undiluted 70% to 91% rubbing alcohol can soften tree sap and remove leftover adhesive from stickers or badges. Be careful when using full-strength rubbing alcohol because it can cause damage with repeated exposure or single exposure to fresh paint. The same can be said when using other solvents to clean car paint, and with correct usage shouldn’t harm otherwise healthy paint. Believe it or not, some recommend using WD-40 for adhesive removal, and it is one of the many household items that make for an excellent DIY cleaning hack.
PRO TIP: The polish oil and residue fill the scratches during scratch removal. Use isopropyl alcohol to remove oils when polishing the paint to check the scratch removal progress before applying a paint protection product. I’ve used this polish removal method for over a decade without ill-effect. The vehicle surface temperature is the most important, and it could vary depending on the location (shade or sun or inside or outside). Ambient temperature is a good guideline to work by. Avoid applying products to the paint for multiple reasons when the temperature reaches 90 degrees Fahrenheit or higher.
When you keep your vehicle clean and in excellent condition, it helps retain its value when you sell it privately or trade at a dealership.
Editor’s note: This article has been updated since its initial publication.
Trevor Spedden is an author specializing in car detailing content and is a life-long automotive enthusiast. He enjoys spending time in the garage maintaining and detailing his 2015 Volkswagen GTI and finds it a relaxing way to spend the weekend. Depending on the time of year, you might also find Trevor at one of Vermont’s numerous mountains taking in the scenery while snowboarding or mountain biking.
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