Clean the area of the cigarette burn to remove dirt and oils from the surface of the leather. For best results, use leather cleaner. Wait five minutes, giving time for the leather to dry.
Scrape the cigarette burn with a razor blade to remove the surface of the burn.
Squeeze a small amount of leather filler onto a palette or dish. Leather filler is a thick paste designed for repairing holes in leather.
Pour a few drops of pigment based paint into the same dish as the leather filler. Mix the paint and filler together until the paste matches the exact color of your leather. It may be necessary to use a combination of paint colors to get the right color match.
Fill the cigarette burn hole with colored filler. For best results, use a straight-edge working tool, such as a spatula. It may be necessary to apply several coats of the paint to perfectly match your original leather.
Allow the paste to dry. This can take several hours.
Use 320 to 400 grit sandpaper to sand down the mended area. This will make the mended area smooth and even.
Use a sponge to apply adhesion promoter on top of the mended area.
Apply pigment-based paint to the mended area. The paint should match the exact color of your leather. Wait for the paint to dry.
Apply a clear topcoat of paint over the mended area to seal the paint. Do not touch the leather until the topcoat is completely dry. For less shine, use a matte topcoat, instead of glossy.