Steel-frame, alu-frame, carbon fiber-frames, and do not forget about the wooden ones. Some are standard, others up and coming, others again just partially useful and rather collectibles. But when it comes to have a pretty bike, materials do not matter. They just need to look good … always. Curing the frame has not only aesthetic reasons, though, let's not forget about corrosion aka rust. If you want a pretty bike which at the same time does not relentlessly fall into pieces, cleaning and protecting the frame and its finish is essential. Even carbon fiber is prone to rust due to being processed also with metal. Not only does PROED make your bike fabulously shiny, it also protects it.