Explore the realm of covert communication with this set of four Luminous Light Invisible Ink Pens. Ideal for those secret messages or personalised notes, these pens dispense ink in a range of hues—blue, yellow, pink, and purple—that are invisible to the naked eye, revealing only under ultraviolet light. Whether for playful pranks or professional uses, these pens are an intriguing addition to your writing arsenal. Each pack provides ample ink to pen down your mysterious scribbles, and the sleek design ensures a comfortable writing experience.
eBay