RustBlast typically does have a dye in it so a difference can be seen between RustBlast and KBS Klean as these two products are typically put in spray bottles for application. The color of the dye we use depends on what is available so please do not assume that one color of RustBlast is better than another color. The dye is simply in there, so you know you are using RustBlast and not KBS Klean (which is clear).
Please check out the complete RustBlast Application Directions before you begin your project.