Our beard filling pen (black box) contains tocopherol and lanolin. It offers dual protection, being waterproof and non-fading, with a waterproof and non-fading formula added. Anti-static design, sturdy and durable, immediately fills beards, hair and eyebrows. Its usage method is very simple: 1. First, draw the outline of the beard. 2. Continue to color evenly inside along the required shape. 3. As shown in the figure, just fill it in completely. And it can last the whole day, full of confidence, and will not be soiled or faded by sweat or rain.