I did mine two weeks ago with the 3M kit and they now look like brand new. I have also been in a coulple of storms and two car washes. I did have some problems with the first step as the paper seemed to stop cutting and had to be cleared. I think the real problem with our stock lights is the clear coat which goes bad. I kept sanding until they were opaque white and all the clear coat was gone. To do this I found it easier to finish the first step by hand and not on the dril. three layers of tape and keeping the spay bottle spaying it a very good tip. While our head lights seem to suck, there is now excuse to have them looking bad with the 3M kit available.l