Behold, the popular Elephant's Toothpaste reaction… We look at it in some detail. Support us on Patreon and adopt an element: https://www.patreon.com/periodicvideos Raw footage of slow motion: https://youtu.be/r9_Xb1z45ZI Hydrogen Peroxide solution is catalysed by Potassium Iodide – washing liquid (for foam) and food dye (for colour) make the whole thing more visible!