Ballpoint ink is a special type of ink used in ballpoint pens, which are popular writing tools. This ink is oil-based, making it thicker and less likely to smudge compared to water-based inks. It dries quickly, allowing for clean and precise writing without the mess. The design of ballpoint pens includes a tiny ball at the tip that rolls as you write, drawing ink from the reservoir onto the paper. This simple mechanism helps control the flow of ink, making it easy to write smoothly. Because of its durability and convenience, ballpoint ink is widely used in schools, offices, and homes.