Create invisible ink with this UV pen making guide. Susan Collins' Re-Election Prospects Dim 10 Things You Should Never Clean with a Mr. Clean Magic Eraser Donald Trump's witness move fails in ...

The permanent, washable invisible ink within the pens vanishes shortly after being used to write words and becomes visible again when exposed to UV light.

The permanent, washable invisible ink within the pens vanishes shortly after being used to write words and becomes visible again when exposed to UV light.

I spy invisible ink pens that belong in the kids' stockings — snag a pack for $8 They have built-in UV lights and are suitable for children ages 3 and up, but you'll have fun using them too!

"The invisible ink works best on plain white paper or light-colored surfaces. When used on dark or heavily textured paper, the writing may not be as clear or visible under the UV light." ...

Invisible ink pens are an excellent way for grown-ups to discreetly mark items in their workplace and a great toy for kids who want to play games.

Invisible ink pens are an excellent way for grown-ups to discreetly mark items in their workplace and a great toy for kids who want to play games.

The permanent, washable invisible ink within the pens vanishes shortly after being used to write words and becomes visible again when exposed to UV light.

Invisible ink pens are an excellent way for grown-ups to discreetly mark items in their workplace and a great toy for kids who want to play games.