The KREUL Glass & Porcelain "Classic" dries opaque and glossy. It can be applied to porcelain, glass, ceramics, terracotta, and metal. After drying (approximately 4 hours), the color can be baked at 160 °C for 90 minutes. After this process, the appearance resembles glazed ceramics and is water- and dishwasher-safe. Additionally, the color adheres well to many plastics, acrylic glass, and mirrors. Without baking, the color can be removed with water. For thinning, a color thinner should be used that does not affect adhesion. When painting, care should be taken not to paint surfaces that come into contact with food.