The Drawing Gum marker lens for easier use of the product, with a more precise application, and thinner lines. It must be primed before initial use, then: - with the top on, shake the marker firmly to get the ball moving, - then, on a sheet of paper, press on the tip several times to soak it with paint. It is advisable to clean the tip regularly after use by taking it out of its base and passing it under warm water. If residue forms on the tip, it is easy to remove excess material with your finger. If necessary, a spare tip is integrated directly in the cap. It must be stored horizontally, and can be kept for 6 months after it is first primed at moderate room temperature (15-25 °C). The marker is a very practical, all-in-one tool thanks to its easy handling and use. It is a mobile product that can be taken everywhere. It can be used in conjunction with the bottled version, which is better suited to large applications. Be careful: aeroplane flights can cause an excess of product on the tip and in the cap. Carefully open the cap and, if necessary, clean the tip and cap before starting to decorate. For Drawing Gum markers with 4 mm tips, it is possible to purchase bags of spare 4 mm tips, consisting of 4 tips: two round tips and two angled tips for thick or thin calligraphic patterns. This allows to expand the marker's capabilities, while extending its shelf life.