In the video, a person is seen applying a white substance from a tube onto a surface. The substance appears to be a type of adhesive or sealant. The person's hand is visible, and they are using a squeezing motion to apply the substance. The surface on which the substance is being applied is not clearly visible, but it appears to be a flat, horizontal surface. The tube is white with blue text, but the text is not legible. The person's hand is steady, and they seem to be applying the substance with care.