I was unable to remove a protective adhesive backed film on an aluminum car chassis and realized that some spilled gasoline had done the job. Being very cautious about flammable materials, I looked for a safe and effective material to dissolve the adhesive that held the clear film and was a little skeptical at first. Much to my surprise, a couple of applications and some overnight soakings made the film easy to remove with a plastic razor blade leaving no scratches on the aluminum. Great product and safe to use!