This is the perfect wash for modern aircraft exhausts. This color also works perfectly on scifi models and metallic parts Just shake well before use and you can apply it directly to your model to create depth in the details of the aircraft exhausts and engine parts. This is an enamel product and can be dissolved using our white spirit or odorless turpentine. It is recommended that this product is applied to surfaces that have been painted or varnished with acrylic paint.