In the video, we see a close-up of a person's hand as they are cleaning a sink. The person is using a brush to scrub the inside of the sink, focusing on the drain. The sink appears to be made of stainless steel, and there is a visible reflection of light on the surface. The person's hand is moving in a circular motion, and we can see the bristles of the brush as they come into contact with the sink's surface. The water in the sink is clear, and there are no visible soap suds or cleaning products. The person's hand is steady, and they seem to be applying a fair amount of pressure to ensure all areas of the sink are cleaned thoroughly.