In the video, a person is seen holding a small plastic bottle with a black cap. The person is using a dropper to add a few drops of a dark liquid into the bottle. The liquid appears to be a concentrated solution, and the person is careful to add only a small amount at a time. The bottle is transparent, allowing the viewer to see the liquid inside. The person's hands are steady as they hold the bottle and dropper, indicating that they are experienced in this task. The background is a plain white surface, which provides a clear contrast to the dark liquid and the black cap of the bottle. The video does not contain any text or subtitles.