Modena is an air dry resin clay (cold porcelain), and is soft & flexible. It dries translucent & waterproof and is virtually unbreakable. It is advisable to add either acrylic or oil paint to this clay to make it opaque. Most people use white and then colour the whitened paste with the paste food colours you would use for your sugar paste. However if you prefer, you could use coloured paints. This is the brand used by Alan Dunn. It is non-toxic. You can use a glue or water to join cured Modena pieces together. Please note there has been a packageing change.