This UV blacklight reactive blue invisible ink large tip marker/pen uses high quality permanent invisible ink. Perfect for identification marking, wall decoration and other stealthy security uses. Glows an incredible bright blue. Perfect for metal, glass, plastics & paper, etc. Totally invisible, wo...

Great for readmission ink hand stamps, box & document marking, and other unique security applications.

INVISIBLE INK Transparent, invisible ink that becomes visible only under UV light aka blacklight. Here's that hard to find invisible ink for hand stamps, date stamps,part marking and other unique application. Use on Paper, Fabric, Wood , Metal or Walls. Body decoration is a new and popular use for...

Our Opticz brand invisible UV ink has been a trusted go to source from every day casual users to large corporations for 10+ years! Manufactured and distributed by DirectGlow exclusively, you will be hard pressed to find a comparable ink that outperforms our brand in quality or price! All purpose Opt...

Our Opticz brand invisible UV ink has been a trusted go to source from every day casual users to large corporations for 10+ years! Manufactured and distributed by DirectGlow exclusively, you will be hard pressed to find a comparable ink that outperforms our brand in quality or price! All purpose Opt...