Spray a thin layer of clear coat over the rims. it will drip, run, and ruin the look of your rims.
If the dust generated is white rather than gray, your wheel rim has a clear coating which must be removed to reach the curb rash. If your wheel rims are not.
remove protective lip. Note this only applies if your rims have protective.
a direct hit that damaged the wheel structurally, the 'curb rash' you a curbed wheel also can vary but typically involves removing all dirt.
Curb rash repairs are costly and should be Avoided - here's what to Expect If one Instead, you can either replace the entire wheel, or try to remove and replace.
Paint car wheels and apply clear coating with the problem of scratches and curb rash. I hope.