Gel pens stand out from traditional ballpoint and rollerball pens due to their unique ink formula. Unlike oil-based ballpoint ink, which can be thick and require pressure to write smoothly, gel ink is water-based and infused with pigments that create vibrant, opaque lines. This results in a smoother writing experience with richer colors. Additionally, gel pens offer a wider variety of shades, including metallic, pastel, and neon options, making them a favorite for both professional and artistic use. Personalized versions are especially popular as promotional tools, combining premium writing quality with eye-catching branding opportunities.