My daughter bought her first car last week. It has window tint film on the rear window and on the back door windows. I checked the Internet for tips regarding how to remove it (she does not like it and it is less necessary in Michigan than southern states). It seemed pretty simple so armed with a hair dryer, I attempted to remove it today. The film started to come off fairly easily but it left the adhesive behind. I stopped after removing about 15% of the film off the rear window since it was not going well.

Any ideas of how to get the adhesive to come off with the film? Maybe I need to wait for warmer weather. It was 40 degrees today. It does not seem like that would matter since I was using a hair dryer but maybe I was not doing a sufficient job heating the film and doing this on a hot day would work better. Any thoughts? Anybody had this problem before and successfully solved it?