Clean the gouged area of any debris or dirt with a moist towel. Dry thoroughly.
Lightly scuff the area around the gouge with a fine-grit sandpaper. Try to dig out the gouge a bit without damaging too much of the surrounding area.
Spread leather filler onto the sanded area. Fill the gouge, then smooth it flat with a plastic applicator or a Popsicle stick. Allow the filler to dry. Drying time will vary depending on what type of filler you use, so refer to the directions.
Sand down the filled area, without touching the surrounding leather, using fine-grit sandpaper Make the filled area blend into the natural surface of the leather.
Apply a leather dye to the filled area, choosing a dye that matches your leather color. Spread on a thin coat. Allow it to dry. Apply a second coat and allow it to dry. If the leather looks repaired and blends into the surrounding leather surface, you're finishes. Otherwise, apply a third coat and reassess the repair.