How to Clean Lime Powder Off a Car?

[Annie]

Apply an appropriate amount of car cleaner onto a cloth (car cleaner contains anionic surfactants, which can dissolve and remove lime stains from the car). Carefully wipe the lime stains off the car with the cloth. Then use a damp towel to clean the car body thoroughly, and the lime on the car will be removed.

[StQuinn]

Last time, I was really worried when a pile of lime powder from a construction site fell on my car roof. I immediately used a high-pressure water gun to rinse it from a distance with a wide spray, making sure the water flow was gentle to avoid pressing the lime particles into the paint. After removing most of it, I mixed some white vinegar with water and sprayed it on the remaining spots, letting it sit for five minutes to neutralize the alkalinity. Then, I gently scrubbed in circular motions with a soft-bristle brush. Finally, I used a dedicated car wash soap to clean the entire car and rinsed it thoroughly, making sure to dry it completely to prevent water spots. I finished by applying a layer of car wax for protection. The whole process took over half an hour, but thankfully, I acted in time and didn't damage the paint. My advice is to never use a cloth to dry wipe in such situations—lime particles are even more abrasive than sand on car paint.