Which innovative scientific product initially failed in the market until its manufacturer completely repositioned it from an 'adhesive failure' to a 'removable note solution'?

The journey from laboratory discovery to commercial success is filled with fascinating marketing decisions. Many groundbreaking scientific products faced unique challenges in consumer adoption. This trivia question examines how one revolutionary scientific product overcame significant marketing hurdles to become a household essential. Test your knowledge of how science innovation intersects with marketing strategy!

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Post-it Notes (originally developed as an attempt to create a super-strong adhesive)
Teflon (originally developed for nuclear weapons projects before becoming cookware coating)
Bubble Wrap (originally marketed as textured wallpaper before becoming packaging material)
Super Glue (originally developed as clear plastic gun sights for WWII before becoming an adhesive)