Special glazes of different types of finish: Reactive, Jasper, Sand, Stone or Metallic effect, for example, which are formulated without lead in their composition. For either application technique, depending on if the product is opaque or clear, glazing can be done on bisque white or red ceramics, which are dust- and grease-free. The result will vary depending on if white or red ceramic is used, due to its reactive basis. This collection of colours can be mixed with each other and their firing temperatures range between 980°C to 1080ºC. However, they can be fired at higher temperatures to obtain the same or different finishes, depending on the type of clay used.