With a fountain pen and our neon-coloured ink, you can precisely mark, underline and annotate even in small print, depending on the nib strength used. Fully dried royal blue ink or printed texts are only slightly dissolved when vigorously overpainted with the neon fountain pen inks. The Octopus text market inks meet all the requirements of a document-proof ink: they are water-resistant, eraser-proof and lightfast. This makes them suitable for painting, drawing and calligraphy as well. All inks are made exclusively with vegan ingredients.