Waterbrush pens are a fun and interesting way to add some flair and depth to your writing and sketching. These tools are constructed of either a bristled brush or foam tip and can be used for lettering, ink washes, or as a complement to a fountain pen when drawing or sketching. The Museum Aquerelle waterbrushes from Caran d'Ache are one such example. Available in three sizes, these pens can be used with water, ink, or a combination of both. Watch this video to learn more about them and see some examples of their uses.