Glow in the Dark Mason Jars Be careful with the paint, it is waterproof You’ll need: Mason jars Glow in the dark paint Paintbrush Tap water Step-by-step Wash your jars. Then mix the paint with your brush to have the glowing particles evenly dissolved. Make tiny dots in the inside of the jar. The more dots you make, the prettier the jar will look. Leave to dry. You're done. In daylight your jar won't look that fancy, but at night it will make your room beautiful and cozy.