Mod Podge Blacklight Blue is a 3-in-1 formula for decoupage and craft projects that you want to give a blue luminous finish. The glue dries clear and glows blue when exposed to a blacklight. Decoupage gives furniture, clothing, home decor, accessories and more a new look with fabric, (decoupage) paper, napkins, photos or other materials. Mod Podge Blacklight Blue is ideal for craft projects with children and children's parties. Or add a cool black light effect to vases, wall art or bags. The possibilities are endless!