If you’re looking for a way to keep your car sun visor from fogging up, there are a few things you can do. First, make sure the visor is clean. If it’s dirty, the dirt will block the air flow and cause it to fog up. Second, try using a sun visor holder. This will help keep the visor in place and prevent it from moving around. Finally, use a sun visor sticker. This will help reflect sunlight away from your eyes and keep your car’s interior cooler in summer months. ..