The Vallejo Model Wash Blue Grey provides new techniques for rendering the process of ageing and exposure to the models. This is a good quality wash created with special water based formula. It highlights even the smallest details of the model and accumulated dust caused by weather exposure. The product is equally useful for quick shading for the creation of caked dust and dirt around the details of the model. This wash is also used as a filter and applied uniformly on the model to modify the base colour. It can be applied by brush or airbrush and dries very quickly.