In this video, I used a Smiggle spy pen with invisible ink to create a hidden doodle that only shows up under UV light! ️🔦 It was a challenge to draw without seeing everything right away, but the ...

Get ready for an epic glow-in-the-dark doodling adventure using the Smiggle Spy Pen! In this video, I tested invisible ink and a UV flashlight to create a glowing piece of art that only appears under ...