These UV ink markers by Direct Glow are completely invisible in normal light, but illuminate incredibly bright in UV blacklight! Use these markers to implement security procedures, secretly mark your valuables, write hidden messages, artistic application, highlight your next glow party, or just plain fun! Each marker is filled with our special blend of UV ink, so you get long lasing special UV effects.
Opticz XL Invisible UV Blacklight Reactive Large Tip Ink Marker – DirectGlow LLC
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DirectGlow UV Blacklight Reactive Large Tip Invisible Ink Marker Blue Red Yellow with UV Light : Office Products
Invisible and colorless in normal light. Glows bright red blacklight. 3 Full size XL markers per set. Extra large body with broad tip. Contains twice
Set of 3 DirectGlow Extra Large Invisible Red UV Blacklight Reactive Ink Marker Pen 3 Pack
Our general-purpose invisible UV ink goes on invisible and glows blazing bright blue in UV blacklight. Alcohol based and designed to dry fast; this ink is ideal for a variety of security purposes as well as casual fun use. Won’t gum up and become sticky like traditional marking inks. Great for admissions, discreet identification, secret messages and glow parties, our invisible blacklight glowing ink is an all-in-one solution.
Directglow General Purpose Invisible Blue Ultraviolet Blacklight Reactive Ink Secret Messages Security Identification Glow Party (4 Ounce bottle)
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9oz Neon Assorted UV Blacklight Reactive Hard Plastic Glow Party Cups – DirectGlow LLC
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Ultraviolet Glow Art
DirectGlow Extra Large Invisible Red UV Blacklight Reactive Ink Marker Pen