Permanent markers are writing instruments that use a special ink designed to be long-lasting and resistant to water and fading. They typically have a felt tip that allows for smooth application on various surfaces, including paper, plastic, metal, and wood. The ink dries quickly, making it ideal for labeling and crafting. These markers are commonly used in schools, offices, and homes for tasks like creating signs, marking boxes, or drawing. However, because the ink is difficult to remove, care should be taken when using them on surfaces where you might want to erase or change the markings later.