Winsor & Newton's famous drawing inks are formulated from a series of soluble dyes in a superior shellac solution. Apply them with brush, pen, or airbrush. They are widely used by illustrators, designers, calligraphers, and artists. These brilliant colors are fully intermixable, and they are easily diluted (with distilled water). Fast drying and water resistant, they have excellent adhesion on most surfaces. Seldom is an art materials product so beautifully designed, and so pleasing to handle and touch, as are the Winsor & Newton Drawing Inks! The 14 ml (½ oz) glass bottles have an oversized base, so they are difficult to overturn or spill. The labels on the bottles, and even the boxes they come in, are themselves timeless works of art. Each label has been individually designed, and contains a unique and whimsical illustration that features the color itself. Many of Britain's finest illustrators contributed to the series. No wonder that the colors sets have become one of our favorite gifts for illustrators! Note  — Dye-based colored inks are exceptionally brilliant, but their colors should be considered fugitive. Consider them to be an illustrator's medium, used to create original works for scanning or reproduction. Avoid bright light when displaying them, and use UV-protective glass.