A pen-type weathering material that can be easily reproduced just by painting a three-dimensional stain expression. The sand is bright yellow reflecting the image of African sand. Just turn the tip of the pen like a stick stick to get the color and just paint directly. Since it is water-based, it can be spread with a brush soaked in water, or with your finger before it dries. Feel free to use it on the finished model and enjoy the dirty expression easily