How to Clean Cement Residue from a Car?

[VanRebecca]

Cleaning cement residue from a car can be done using the following methods: 1. If the residue has been there for less than 12 hours, first wet and soak it with water, then use car wash soap and a towel to gently wash it off; 2. If it has been more than 12 hours, the cement will have hardened. You can purchase acidic solution from a pharmacy, dip a brush in it, and apply it to the cement. The acid will dissolve the cement, which can then be rinsed off with water; 3. Pour gasoline over the residue, wait for it to soften, and then manually remove the cement. This method is suitable for large areas; 4. Use a hair dryer to heat the affected area, and the cement will usually fall off on its own; 5. Spray white vinegar onto the cement using a spray bottle, wait for 3 to 5 minutes, and then scrape it off with a hard card. Afterward, clean the area with car wash soap where the vinegar was applied.