Holbein Artists" Quality Watercolors offer a wide range of moist, transparent watercolor with incomparable purity, brilliance, and permanence. Holbein manufactures their watercolors without Ox Gall or other dispersing agents so they move slowly for better brush control. Make your own pan watercolors with Holbein Watercolors. The creamy consistency means they will not crack or crumble when dry, and they rewet easily.