Make your projects glow! Anita's Glow-In-The-Dark Medium is a high quality indoor and outdoor water-based paint for adding luminescence to most surfaces charged with light. It may be used alone or with light colors. For use on wood, canvas, plaster, clay, bisque, and more. It also works well on pre-washed fabric when not mixed with other paints. Allow 24-48 hours before washing. Permanent and non-toxic. Use soap and water for cleanup while wet.