Trim any loose leather fibers from the piece of furniture using scissors. This makes the surface smoother and neater to allow the repair process to work well.
Sand the scratched surface of the leather furniture using 320-grit sandpaper. This removes any loose bits of leather left on the surface.
Gently sand the leather surface using 1200-grit sandpaper to smooth the surface.
Wipe the surface down using specialized leather cleaner. Let the leather air-dry.
Apply leather filler to the furniture's surface using a palette knife to spread the filler over the scratches.
Re-sand the surface using 1200-grit sandpaper to fill in the cat scratches.
Apply leather colorant to the furniture using a sponge or airbrush.
Fill in any remaining scratches that appear, and apply a second coat of colorant.
Spray lacquer directly onto the leather to seal it and help protect it from further damage.