1. Blot any excess grease off the leather with a clean cloth.
2. Put talcum powder or corn flour on the grease stain.
3. Leave the leather to dry for 4 hours. Wipe the powder off, which will lift the grease stain.
4. Apply a conditioner to the finished leather. Restoration leather conditioner is a product you can use after cleaning the grease stain on leather. Use mink oil to preserve unfinished leather.