The wall of a bubble is essentially a water sandwich--water trapped between two layers of soap molecules. Adding a thickener such as glycerine or guar gum thickens that soap layer, more effectively trapping the water and preventing it from evaporating and popping as quickly. The result? Huge bubbles. And walls thick enough to blow on to create even more bubbles. Science and play, all in one.
This moment is so playful, I love the layers and colors of bubbles breaking up the frame! Kudos on an awesome caption that teaches us more about the process of making the bubbles come to life.
Associate Photo Editor, Nat Geo Your Shot