Soft white sugar can increase the viscosity of the bubble, make the thin liquid film of the bubble is not easy to break, and wrap the air inside tightly.
White vinegar is acidic and baking soda is alkaline. When the two are mixed, a chemical reaction occurs that produces a large amount of carbon dioxide gas, this carbon dioxide gas causes a lot of foam in the detergent solution, creating "lava".
Colorful Pearl Rain
The density of water is higher than that of edible oil, so the drops will sink to the bottom of the bottle while dropping into the edible oil. Water droplets are spherical because of the same force around them while falling down.
Teeth Of Salt
Saltwater will rise along the cotton rope due to its capillary action. After the water in the cotton rope evaporates (some salt crystals will fall on the chassis), the remaining salt crystals will gather together and are arranged in a special geometry.
Dishwashing liquid contains surfactants that destroy the surface tension of the milk so that the pigment around the milk will spread and create beautiful animation.