In the video, a man is seen holding a paintbrush and a bottle of mineral spirits. He is using a heat gun to apply the mineral spirits to the bristles of the brush. The man is standing in a workshop, and there are various tools and materials visible in the background. The brush is being held in his left hand while he uses the heat gun with his right hand. The mineral spirits bottle is placed on the workbench next to the brush. The man appears to be demonstrating a technique for cleaning or preparing the brush for use.