【Limited edition】 It can be used by rubbing the color ink stick on an inkstone. It does not have to be kneaded like mineral pigments. Mineral pigments (inorganic pigments) are used for making this series of color ink sticks. The color will appear beautifully by painting several thin layers. Painted color does not reflect light even layered several times, so halation is not caused by a photo flash. Suitable for painting paper and silk. Possible to use for inscription with deeper ink that can make by keep rubbing it. Rubs a color ink stick with a small amount of water on a ceramic inkstone. When mixed colors, colors tend to separate because of the difference of specific gravity that pigments have, so please stir well the ink every time. By adding animal glue, it can have various expression and will be easier to rub the color ink stick. After using, wipe the moisture on it for avoiding cracks.