Pebeo Vitrea 160 Decorative Markers are specifically for use with glass and crystal products to mimic the look of stained or coloured glass. They can be used to create outlines or for fine detail work. They offer more control than drawing freehand with a paint brush as an alternative to using the Pebeo Vitrea 160 Decorative Paints or can be used to complement the paint pots. Shake the Pebeo Vitrea 160 Markers before use, then press the tip several times to prime. Once your design is complete allow your piece to dry for at least 24 hours prior to baking in the oven ensuring the paint is completely dry. Place in a conventional oven at 160oC for 40 minutes for the paint to cure. Leave the piece to cool slowly in the oven before removing. Once set your decorated glass pieces are dishwasher safe. Pebeo Vitrea 160 Decorative Markers should be stored flat. Avoid placing any paint on surfaces that may come into contact with food or the mouth such as glass rims.