The Wilder NitroLine are enamel based products for quickly and easily applying various weathering effects onto all types of models and dioramas.NitroLine products can be used straight from the bottle or thinned using enamel thinner. NitroLine products work best over acrylic finishes. Thoroughly mix and shake the bottle prior to use for best results.Shadow Washes: Washes are a quick means of adding subtle fake shadows and tonal variations. These effects will help to highlight details such as rivets, seams and textures. Washes also add more tones to a finish. Applying washes is usually the first weathering step after a base coat if no filters are needed.Even today some armour modellers prefer washes as the only weathering step needed to finish a model. The percentages of a mix can differ depending on where and why the wash is being applied.Wilder NitroLine Black Smoke Wash is recommended for adding shadows to highlight seams and details on neutral grey and very dark surfaces. It can also be used to create smoke and exhaust effects.