[header] How to remove red wine stains from leather [title] See if the leather is finished or unfinished. [step] If the leather is naked or aniline, it has no protective treatment, and will need to be cleaned by a professional. Wet a paper towel, and let one drop of water fall onto the leather. 
If it soaks into the leather instantly, do not attempt to clean it yourself. If it remains in a bead on the surface, however, the leather can withstand home treatment.