Gel pens were first introduced in the 1980s, offering an alternative to traditional ballpoint pens. Unlike oil-based ballpoint ink, gel ink is water-based with pigments suspended in it. This combination allows the ink to flow more freely, creating smoother, bolder lines without requiring much pressure. https://www.123articleonline.com/articles/1489382/why-gel-pens-are-popular-among-students-and-professionals-alike