You can write anywhere: T-shirts, paper, skin. Permanent but washable! Invisible Pen brings you a variety of fun activities like treasure hunts. 6 Different Colors: 6 pens in 6 different shell colors ( yellow, green, black, blue, purple, rose ).
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UV light is also useful for detecting counterfeit bank notes. Simply use the pen to make a distinguishing mark and use the UV light to make checks. Invisible ink pens are great for marking all kinds of surfaces and applications, especially paper.
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4 x UV Spy Pens. Invisible Pen brings you a variety of fun activities like treasure hunts. You can write anywhere: T-shirts, paper, skin. Permanent but washable. Battery contained and installed.
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UV light pen with violet LED on the lid. Invisible Pen brings you a variety of fun activities like treasure hunts. UV Light Pen. You can write anywhere: T-shirts, paper, skin. Permanent but washable.
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UV light is also useful for detecting counterfeit bank notes. Simply use the pen to make a distinguishing mark and use the UV light to make checks. Invisible ink pens are great for marking all kinds of surfaces and applications, especially paper.
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Perfect for carnivals, festivals, escape rooms, and creative fun, these magic pens are a must-have for anyone who loves secret notes and spy gadgets. The compact and lightweight design makes them easy to carry, while the battery-powered UV light allows for instant use.
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Lightweight, colorful, and simple to use — thesemulti-function plastic fluorescent pens make secret writing exciting for children. Product: Invisible Ink Spy Pens. Quantity: 20pcs. Random Color Pens.
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Ink visible under UV light Permanent Smudge-proof Waterproof Fast drying ink Bullet tip Nib 1.5 - 3mm .
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