You may have seen those really cool glow in the dark ink Instagram videos. If you have thought, “I would like to try that,” you’re going to need some fountain pen ink. Noodler’s Bulletproof Blue Ghost Invisible Fountain Pen Ink is the stuff to make all your dreams come true.

This is just the ink, you’re going to need to pen in which to dip the ink and also some knowledge of how to use a calligraphy pen otherwise you’re just going to make a huge mess and it will look nothing like it does in the cool videos.

Also, to note, this isn’t actually glow in the dark ink (although that is something that is made) this is black light reactive ink so you can make really awesome looking art with it. People keep trying to say that black light isn’t cool but they’re lying. Anyway, you can find inexpensive fountain pens on your own but the ink will run you $13.49.

https://www.youtube.com/watch?v=RxcK-V-tf8E