Nubuck is a top-grain cattle leather. Like suede, it is sanded to create a smooth surface.
Nubuck is very vulnerable to dirt and stains. Suede and nubuck need to be cleaned and protected with tools and products specifically designed for its care.
If all of the above fail and your REBECO boots are still stained, they can be easily sanded.
Ideally, use a soft pumice stone* that is, the texture of a common rock.
The top layers will fall off and it will look newer. After using the stone, some will need to be sanded evenly. This process will take about 10 minutes per pair of shoes.
The best way to keep your Rebeco Boots clean is to apply a spray protector at least every 6 months. Spray on the protector, and give the leather time to fully dry before wearing.
If the boots are dirty, clean the leather first and then apply the protector.
Consider purchasing a brush with wire bristles in the center and nylon bristles all around. Use the nylon bristles for gentle brushing and the wire bristles when you need a stronger brushing.
Never try to clean the shoes with water
Be careful with the brush – you may destroy the upper part of the leather if you brush it too hard or too long over a single area.