I'm decluttering my house. This is a ground for oil paints, alkyd paints, acrylic paints, tempera paints, etc., and can be applied to surfaces such as water-based canvas (absorbent and semi-absorbent canvas), cloth, clay, and stone. It is water-soluble during use, but becomes water-resistant after drying, enhancing the color development of various paints. It's been a while since I purchased it. Please take a good look at the photos and only purchase if you understand.