I'm not a chemist. Elephant toothpaste (aka slime foam) has sort been done so many times I wanted to do it really big. We did a ton of testing. Science Bob's Elephant toothpaste recipe- https://sciencebob.com/fantastic-foamy-fountain/ Here is Science Bob’s behind-the-scenes commentary: https://sciencebob.com/elephant-toothpaste-experiments-with-mark-rober/ I started a company called CrunchLabs where we build a toy together and then I teach you all the jucy physics for how it works. So if you want to learn to think like an engineer and have really fun time doing it, check out the current promotion where you get 2 FREE boxes at null You should also go subscribe to the CrunchLabs YouTube channel cause we’ve got some great videos in the pipeline- null Thanks to these folks for providing some of the music in the video: Ponder - null Laura Shigihara - @supershigi Andrew Applepie - https://soundcloud.com/andrewapplepie Blue Wednesday - https://soundcloud.com/bluewednesday MERCH- They are soft- https://teespring.com/stores/markrober