Cowhide Use a soft-bristle brush preferably at least once a week to clean your nubuck shoes. Waterproof them with a special leather spray. For stains, use a stain remover in the form of an eraser to apply in a circular manner directly on the nubuck, or a powder to penetrate. To restore the shine to your shoes, it is necessary to apply a spray renovator. Designed in Paris, made in Portugal.