Bring a bright, fluorescent pop of color to your writing with Octopus Fluids Neon Ink. Designed for fountain pens, dip pens, and nibs, these vibrant inks are a fun alternative to traditional highlighters and are perfect for notes, journaling, lettering, and creative projects. Available in six bold neon shades - yellow, green, pink, orange, red, and purple - these inks really stand out. Even better, all six colors are fluorescent and glow under black light for an extra bit of fun. Unlike conventional dye-based highlighters, Octopus Fluids Neon Inks are designed to stay bright and vibrant over time. Their resistance to light and UV rays helps prevent the colors from quickly fading, making them a great choice for work you want to keep looking vivid. They’re also a more sustainable option than disposable highlighters. Used with a refillable fountain pen or converter, they can help reduce the plastic waste associated with single-use markers. The inks are made with vegan ingredients and are designed with durability in mind. Octopus Fluids Neon Inks meet the requirements for document-safe ink, including lightfastness, water resistance, and eraser resistance. If you're highlighting important notes, adding color to your journal, or just looking for an ink that makes your writing impossible to miss, these neon inks bring a whole new level of brightness to your fountain pen.