Bubble solution is a liquid mixture used to create bubbles. It typically contains water, soap, and sometimes glycerin. The soap reduces the surface tension of the water, allowing it to stretch and form thin films that trap air, resulting in bubbles. When the solution is blown through a wand or a bubble maker, it forms bubbles of various sizes. The addition of glycerin can help the bubbles last longer by slowing down the evaporation of water. Bubble solution is popular for play and entertainment, often used in outdoor activities and celebrations.