What makes nailpolish melt styrofoam?
What is nail polish?
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First, it's nail polish remover, which is acetone, that does the trick.
Very simply styrofoam is made up of long strands of polymers with air trapped inside. Acetone is a solvent, which breaks down these strands and lets the air escape. As the air escapes, the styrofoam "melts" down into the small amount of residual polymer.
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