The video shows a person using a tool to apply a substance to another person's hand. The tool is being held by a person wearing a ring, and the substance is being applied to the back of the hand. The tool appears to be a small, handheld device with a nozzle that dispenses the substance. The person applying the substance is wearing a black shirt and is holding the hand steady while the substance is being applied. The substance appears to be a clear liquid, and the tool is being moved in a circular motion to ensure even coverage. The video does not provide any context or information about the purpose of the substance or the tool.