With the Kreul Glass & Porcelain Pens Classic, creatives write, draw and paint on cups, glasses, plates, vases, cereal bowls & Co. The brilliant, glossy glass & porcelain paints in pen are water-based and are ideal for decorative designs on glass, porcelain, ceramics, metal, acryl and mirrors. In combination with the Kreul Glass & Porcelain Classic in 20 ml bottles, decorated objects are embellished and shine in a new light. The painted object made of heat-resistant material is placed in the cold oven for fixing. When the temperature of 160 °C has been reached, bake the painted object for 90 minutes.