The Drawback Risk Of Invisible Ink Pen That No One Is Speaking About

The key is Pilot’s particular thermo-sensitive ink that turns invisible when rubbed with the rubber friction eraser included on each FriXion pen. USE: Write a secret message with these spy pens, then shine the UV mild from the cap when you wish to see the message. Shine the UV gently at the top of the pen’s cap to reveal the key message. Be a secret agent with our ALLYDREW Set of 4 Invisible Ink Spy Pen with In-built UV Mild, Secret Message Author. Kids read more