1. It's marking will invisible but illuminates blue under a Ultraviolet (UV) light. It's permanent, water and heat proof, non toxic, eco-friendly.
2. It's can be written on almost any nonporous surface, including paper, clothing & fabric, plastic, glass, metal and so on. Ideal using for Quality Control processes, tamper checks, tagging, ownership, anti-counterfeiting and much more.
3. Color: Clear - Illuminates Blue under Ultraviolet (UV) light.