Holbein Acrylic Gouache - Opaque Acrylic Paint I am decluttering art supplies from my father's art class, which he taught at his home studio until two years ago. These are acrylic paints that were stocked for refills. They are in good condition and appear to be unused, but they have been stored for an unknown period of time. Please consider this before purchasing. Jet Black - 6 tubes Handle with care There are also other colors available in sets of 6. Bundling is welcome. Please comment or request a bundle. 1 box: 700 yen 2 boxes: 1250 yen 3 boxes: 1800 yen 4 boxes: 2350 yen 5 boxes: 2900 yen The following is a description of the product, quoted from elsewhere: It dissolves in water, but once dry, it no longer dissolves in water. When thinning acrylic gouache, add water and wash the brush with water. Once it dries, it will no longer dissolve in water. It dries quickly, allowing for speedy artwork creation. Dries in 20-30 minutes, allowing for speedy creation. A wide range of mediums supports a wide range of expressions. A wide variety of base materials are available, such as gesso and modeling paste, allowing for a wide range of expression. Links to the PCCS (Japan Color Research Institute Color System) 24-hue circle Acrylic gouache tubes are printed with Munsell notation, making it convenient for color management. Also, there are 24 colors linked to PCCS, so when adopted as school materials, you can understand the properties of color through mixing, and study in conjunction with arrangement practice. Excellent lightfastness Uses excellent pigments with little fading.