Nubuck is a type of leather with a fuzzy surface. It's often used in shoes and other accessories because it's durable and stylish. However, nubuck can become cracked over time. If your nubuck is cracked, don't worry - there are ways to fix it.
One way to fix cracked nubuck is to use a suede brush or toothbrush to apply some leather conditioner to the area. Be sure to spread the conditioner evenly, and allow it to soak in for a few minutes before wiping off any excess.
Another way to fix cracked nubuck is to use a shoe repair kit. This involves using a unique adhesive to attach a patch of fabric or synthetic leather over the crack. The adhesive can be purchased at most hardware stores or online.