The painted surface is suitable for writing on with chalk, use wet cloth to remove. Apply the paint in two layers with a brush or sponge in order to achieve perfect coverage. Allow at least one hour drying time between the applications. After 24hours the paint is baked for 10mins at 160 degrees or in microwave oven, 700 watts for 10 mins. After baking will be waterproof and could be cleaned in dishwasher.