These UV ink markers are completely invisible in normal lighting, but illuminate incredibly bright under UV blacklight! Use these ink markers to implement security procedures, secretly mark your valuables, write hidden messages, artistic application, or just for plain fun! Each marker is full of our special blend of UV ink, so you get long lasting UV special effects.
- Completely invisible in regular light
- Bright blue under UV blacklight
- Fast drying alcohol based ink
- Adheres to any surface with ease
- Safe for skin