The Cernit clay can be varnished with the varnish of the same brand, matt or glossy, which is specially made for the clay. This water-based varnish is totally clear after drying and once baked, it prevents any damage from hits or scratches. The varnish is waterproof.
How to use the varnish for polymer clay Cernit.
Blend the varnish before using. The water-based varnish has to be applied on a polymer clay which is baked and degreased with alcohol. It is used with a thin bristled brush.
As soon as the clay is covered with varnish, the drying time has to be one hour. Drying time should be carefully watched between different layers. Your result will be perfect if you apply 2 or 3 layers.
Once it is dry to the touch, bake it once again at 110°C in a domestic and preheated oven for 15 minutes. Leave it to cool down for 48 hours to get the best possible hardness.
When you are done working with the varnish, material and brushes can be cleaned with water.