Chung Hwa Ink Sumi Ink for Chinese Painting and Calligraphy 8.8 oz This award-winning bottled sumi ink is made in China for calligraphy and brush painting. It is permanent andlightfast. It can be used straight from the bottle for its 'super' black intensity or mixed with water to get various gray tones. It dries quickly and won't run or bleed when re-wetted during wash or wet-mounting. If the ink dries on the palette, just add water to dilute itand it can be used again. It rinse out easily and will not cause damage to natural hair brushes.