A good watercolor brush should do at least one fundamental thing: hold water well. Ones made of synthetic hair do a fine job, but those with natural hairs have much better liquid-holding capacity. This is due to their fibrous anatomies that excel at picking up and retaining water for lengths of time. They also tend to feel more like extensions of the artist’s hand, being more sensitive to shifts in pressure. Our picks below will help you find your next go-to brush or upgrade.
Source: artnews.com