In the video, a person is seen painting a fingernail with a brush. The person is using a thin brush to apply a clear coat of polish to the nail. The brush is carefully dipped into the polish and then applied to the nail in a steady, precise manner. The person's hand is steady, and they take care to apply the polish evenly across the entire nail. The background is blurred, but it appears to be a table or countertop with various objects scattered around. The focus of the video is on the painting process, and the viewer can see the transformation of the nail as the clear coat is applied.