The Contours of the Porcelain 150 are a series of 10 dimensional paint lines of brilliance, used in China in intense colors, porcelain, tile, metal, ceramic, glass and more. The contour allows the dimensional effect on the regular platform in the paint. They are perfect for highlighting, outlining, tracking, writing and personalizing works as well as adding dimension or texture. The case comes in 10 colors, including four metallic colors. The paint is squeezed out of a metal tube and sprayed through a slender nozzle. Gently apply pressure to the tube to release the paint from the tube. All colors are water-based and non-toxic. They can also be removed completely before baking for 30 minutes in a 300F / 150C kitchen oven. Once roasted, the colors come in translucent and opaque, have an excellent enamelled look and the paint is permanent, microwave and dishwasher safe, UV and solvent resistant.