Ready to use colours. The glossy or frosted appearance of the colours provides an infinite variety of light and shadow effects. After baking, colours are exceptionally intense and glass appears to have a tinted finish. Before using Vitrea 160 Markers, simply degrease with alcohol or soapy water. After application, allow to air dry for 24 hours, then bake in an ordinary domestic oven. Place the decorated object in a cold oven. Once the temperature has reached 160°C (325°F), allow to bake for 40 minutes. After baking, colours are dishwasher safe (following recommendations) and resistant to detergents and common solvents. Only the areas not intended to be put in contact with food must be decorated. Store markers flat.