Water-based markers suitable for use on all glass and glazed porcelain surfaces! For permanent designs bake in a household oven for 90 minutes at 160°C. DO NOT preheat the oven or the porcelain could crack. Dishwasher safe. Instructions included. Please note: To preserve your designs and avoid wear, markers are not recommended for use on areas that come into direct contact with food or cutlery. Non-toxic. Glass & Porcelain Marker Care:
Commonly referred to as: Glass Markers, Glass and Porcelain Markers.