Higgins Black India Pigmented Drawing Ink, 1 oz. Glass Bottle A warm black, this is a true artist's ink. Non-waterproof black holds precise pen line work as well as bold strokes and delicate brushwork. It differs greatly from black watercolor in that watercolor displays more water solubility and transparency than non-waterproof black ink due to the gum arabic binder. Non-waterproof black ink is semi-opaque and staining: dry edges may be softened, but are not completely lifted. This non-waterproof formula allows for seamless blending, shading, and washes — ideal for artists who seek to create depth and dimension in their work. The ink's reactivity to water enables delicate transitions and soft gradients. This ink is forgiving, allowing for corrections and adjustments. Its carefully balanced, carbon pigment formula is the lightest of the Higgins India Inks, but can be layered to create dense areas of black, as well as diluted to create subtle shifts in the lightest gray tones. Bottles contain dropper to make ink easy to dispense without the risk of spilling. AP Non-Toxic, conforms to ASTM D-4241 and Made in USA.