Staz-on is a solvent-based ink designed for decoration on non-porous surfaces such as glass; metal; shrink plastic; cellophane; aluminum foil; leather and acrylic. You will achieve a beautiful stained glass appearance due to the transparent nature of the ink. Mild smell and safe to use. Acid-free and water soluble for easy clean up. Refill your ink pad or use it straight from the bottle. Bottle contains 0.5oz (14.78ml.)