Remove compound and polish residue and inspect your correction results
Isopropyl alcohol has long been used by professional detailers to accurately inspect their correction results after removing swirl marks, water spots and other paint defects. When properly diluted, isopropyl alcohol removes polishing oils and fillers, enabling you to see the true condition of your vehicle’s finish. Isopropyl alcohol also works well for removing caked on compound and polish residue.
Isopropyl alcohol should be diluted between 10 and 15% before being applied to painted surfaces. Isopropyl alcohol is NOT recommended for freshly painted finishes. You should never use isopropyl alcohol at full strength or it could permanently cause damage to your vehicle’s paint.
Isopropyl alcohol, when diluted accordingly, can also be used to prep surfaces for paint, glass or wheel coatings. A common dilution ratio for this is between 10 and 15%.
Here’s an idea of how to dilute this 50% mixture of isopropyl alcohol to a paint-friendly 12.5% mixture: Get a 32 ounce container and pour in 8 ounces, (or ½ of a 16 ounce bottle) of the 50% IPA then fill the container up with water and you get 32 ounces of 12.5% solution.
Using isopropyl alcohol to remove compound or polish residue or for inspecting correction results should only be performed by experienced detailers.