Extends the life of edding highlighters/text markers; without the addition of xylene and toluene. When an edding whiteboard marker runs out of ink, it can quickly be made to write again by placing it in the refill bottle for at least an hour. Refilling markers not only has a positive impact on the environment, but also saves money at the same time. Suitable for the edding permanent markers e-No.1, e-400, e-3000, e-3300, as well as EcoLine e-21, e-22 and e-25. High-quality brand product, Made in Germany.