Invisible Blacklight Pen- Invisible ink in a pen! Goes on invisible, glows daytime bright under UV fluorescent blacklights. Terrific invisible ink for identification marking. Glows an incredible bright blue. Perfect for metal, glass, plastics etc. Totally invisible, won't wash off; only visible with BLACKLIGHT. Also:

• Glow in the dark designs
• Walls and Ceilings with small dots or draw shapes
• Decorated Light Switches
• Glass and plastic surfaces
• Secret hidden messages...

Anywhere you can mark with a regular pen. Will not wash off with soap and water, but since it is invisible that's perfect! Medium to fine tip. Click here to Contact Us Not for use on skin. Product Number: UVPEN1