In the video, a person is seen applying red hair dye to a strand of black hair. The person is wearing gloves and is using a brush to apply the dye. The hair is being dyed in sections, and the red dye is being applied carefully to ensure an even coat. The person's movements are precise and deliberate, indicating that they are experienced in this process. The red dye is bright and vibrant, contrasting sharply with the black hair. The video provides a close-up view of the dyeing process, allowing the viewer to see the details of the application.