Paint Overspray Removal is an analytical and diagnostic process, just like a doctor attempting to diagnosis and cure an illness. The present invention relates to a specific aqueous separation liquid and to a process for removing paint overspray from a paint spray booth comprising: i) directing a gas stream through a paint spray booth; ii) contacting paint overspray with the gas stream flowing through the paint booth thereby forming a paint loaded gas stream containing paint … So, eventually, the paint … The contractors next door got green overspray from painting a stairwell on a house, on my car Thursday and it is now Monday. I decided to use the medium grade Nanoskin Autoscrub to remove the paint. When I ran my hand across the paint, it was rough as could be. How to remove oil based paint overspray from an automobile paint finish 2003. In these cases, water alone cannot be used to remove the spray paint. Don't be confused by the looks of the clay bar. //