Ink erasers are specialized tools designed to remove ink marks from paper. Unlike regular erasers, which are typically used for pencil marks, ink erasers contain materials that can break down the ink without damaging the paper. They are often made from rubber or vinyl and can be found in various shapes and sizes to suit different writing instruments. These erasers work best on certain types of ink, such as those from ballpoint pens or gel pens. However, they may not be effective on permanent inks or markers. Users should test the eraser on a small area first to ensure it won't harm the paper.