Black sumi ink is a traditional East Asian ink made primarily from soot and animal glue, known for its deep, rich black color and smooth consistency.
Black sumi ink is prized for its versatility. When applied heavily, it produces dense, velvety blacks. When diluted, it creates a full range of grays and soft washes. The ink dries matte and is  water-resistant once fully cured, making it suitable for layering or mixed media work.