4 pc Invisible Ink Marker Pen Blue UV Blacklight Reactive Set

Invisible Ink Markers (Cyan Blue). Invisible in natural light but glows bright under UV black-light. 4 full size ink marker (cyan blue). Color coded

Opticz Blacklight Reactive Invisible Blue Ink All Purpose UV Marker with UV Light

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This is that hard to find UV Blacklight Reactive Invisible Ink for hand marking, body art, document marking, or other unique security applications.

Opticz Blacklight Reactive Invisible Blue Ink All Purpose UV Marker

invisible uv marker pen For Wonderful Artistic Activities

Invisible Ink

Invisible/colorless in normal light. Glows bright blue in UV blacklight. Please note, these markers do NOT glow in the dark. You must have a blacklight to get the glow effects. Extra large body with broad tip. Contains twice the ink as our standard sized markers! Safe for use on skin. Use for security marking (such as admissions) or create amazing invisible body art designs that glow in blacklight! These are the markers you want for semi permanent invisible marking.

Opticz Blacklight Reactive Large Tip Invisible UV Red Ink Marker

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Felt Tip Pens for Artists for sale

Our Opticz brand UV blacklight reactive invisible ink markers use high quality invisible UV ink. Perfect for identification marking, wall decoration,

Opticz 12 Pack Invisible UV Blacklight Reactive Ink Markers with 4 UV Lights