I came across a suggestion for this product in a video showing how to open old painted windows. I've been trying to peel mine off for years, which are unpainted but so old that the paint used to seal the finish has run into the crevices and hardened. I've tried all the recommended tools but with little results. However, when I received this, it magically blew through the polish! So I used it on my painted kitchen window and it worked! Maybe that's exactly what you're looking for.
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