This probably should go in the detailing section, but I feel like diesel is my home. Look at the job that the Sonicare and Neutrogena facial bar soap did on this peice of plastic. This is the mirror flap cover on the front visor. It had a layer of grime that I could not get off with soap and scrubbing. It came right off with the Sonicare. I thought I would have to re-dye all of the plastic in my car, but it looks like brand new now. I'm really happy about the results, and hope you guys will be able to do this rather that re-dye.