These underglazes are saturated, dependable and versatile making them a popular choice for amateur and experienced potters alike. The Velvet line fires true to color at cone 05/06. Some of the colors change at cone 5/6 and 10, but some of them still fire true to color at the higher temperatures too. When left unglazed these colors have a rich, textural appearance of velvet. You can apply a clear glaze over them to gloss them up and intensify the color. Velvet underglazes can be applied to wet clay, greenware or bisque. These glazes are food safe when a proper glaze is applied over them.