5 Pcs Disappearing Ink Pen Refill

• It writes as smoothly as common sign pen with the same blue color while writing.
• The ink will automatically disappear in 0.5~24 h without any remains or signs left.
• One can also leave some secret message or important information to some specific person without being discovered or sign documents in the police.

Specification:
• Color: blue
• Material: plastic
• Length: 12.4 cm

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Available in stores

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Making the test of disappearing ink. "Hello cops and simps!", - is written on the leaf

Making the test of disappearing ink. "Hello cops and simps!" Fifteen minutes passed

Making the test of disappearing ink. "Hello cops and simps!" Half an hour passed

Making the test of disappearing ink. "Hello cops and simps!" Forty five minutes passed

An hour later, the inscription virtually disappeared.
Even translucence in the ultraviolet does not issue trace residues.
Tip: do not press strongly while writing so that there would not issue dents and scratches that could be seen later in reflected light