3GEN Acrylics: Chipping Effect (AK Interactive) (AK11262)An acrylic chipping effect for use between coats of paint. Odourless product for creating scratch effects. It comes in 17ml bottles. How to use: First of all, paint the model with a dark colour or the base colour you want to see underneath the scratches. Then apply a layer of this product onto the area you want to work with, either simply using a brush or an airbrush. Finally, apply acrylic paint over the area where you applied this product. This will