If your leather has stains, there are certain things that can help but probably not totally eliminate the stain. Always try the general cleaning inst...
Step 3: Clean leather
Now we focus on really cleaning the leather. This may take a bit of time and elbow grease. Wet a rag and add a small amount of soap. Work on one section of the leather at a time, rubbing the soap into the leather until it lathers. Our goal is to remove any dirt from within the pores of the leather.
Wipe the lather off with a damp rag or sponge. Repeat this process until the lather no longer turns grey and continue on to another portion of the leather.