Glass liquid

The video uses a satisfying, high-contrast visual demonstration of a product's core benefit (hydrophobicity) to immediately capture attention without needing any dialogue.

A person demonstrates the application and effectiveness of a water-repellent glass coating on a car window. The product is applied, wiped, and then tested with a water spray to show how it beads off the glass.

Glass liquid (a water-repellent coating for car windows). It ACTS: the user applies it to the car window, wipes it, and then sprays water on it to demonstrate the hydrophobic effect. Removing it would change the entire purpose of the video.