I had a lovely tan leather bag, which was stained when a cup of hot chocolate was knocked over. A friend suggested using a good toilet soap on the stains, wipe off and let it dry, and then use a leather nourishing cream. It worked - there was no trace of staining.
oil transdermal .thats what it is supposed to do .leather is skin probally get some neats foot oil, do the bag all over,then buff it with soft nonlint fabric