Dr. Ph Martins Bleedproof White 30ml An opaque watercolor for covering dye colors, markers, and designer colors. It is designed for covering over, not intended for mixing. Comes in a 1.0 oz (30 ml) glass jar. Bleedproof White in a 1.0 oz glass jar Covers dye, marker colors, or pigment color Excellent for correcting on all paper-based surfaces Great for watercolor work for building layers Explore the full range of Watercolour available at London Graphic Centre