Car washes (touchless) do not seem to hurt the Plasti Dip. I have been through numerous, heavy rain, etc. and it has held up awesome on my truck. I did at least 6 coats, lightly applied, to built it up. Don't just cake it on in one thick spray. I wash my truck by hand and a wash mitt doesn't hurt it either. I'm sure if you took a rough brush to it, over time, it would come off though.