I use the Insulator Wax often with wonderful results. It is easy to apply and remove, and will not stain the trim.
Given its superior durability, you shouldn't be applying it often. Usually once every 3 to 4 months in my case.
It should not damage your paint however since there are no abrasives or cleaners in it despite its horrible, chemical smell.
Just be sure your paint is properly polished before applying.