What are the specific ingredients in the Kuro Sumi black ink?

Kuro Sumi black ink is primarily made from a blend of natural ingredients, including black pigment derived from soot, water, and a binder such as gum arabic. It may also contain additives like glycerin to improve flow and consistency. The ink is known for its rich, deep black color and is often used in tattooing and calligraphy. Always check the specific product label, as formulations can vary by manufacturer.