Erasable highlighters allow you to highlight, erase, and re-highlight without damage or mess. They are useful for taking notes, marking important passages, checking off items, or highlighting work files. These highlighters are suitable for students, teachers, and professionals. To erase, use a compatible eraser. Applying heat from friction or other sources above 140ΒΊF will make the ink colorless, but it can be restored by cooling to at least 14ΒΊF in a freezer. Not recommended for use on legal or official documents.