This is Linda. Leather stains are notoriously difficult to remove, however you can try lemon juice and Cream of Tartar. Here's an article that can guide you. Wishing you success.
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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They sell stain removers for leather: https://www.furnitureclinic.com/Leather_Ink_Stain_Removers
HI Martha
This is Linda. Leather stains are notoriously difficult to remove, however you can try lemon juice and Cream of Tartar. Here's an article that can guide you. Wishing you success.
https://www.hunker.com/13423373/how-to-remove-stains-from-white-leather
Depends what it is...
Martha,. Use Saddle Soap, you can find it at an automotive store, follow directions on the can. Aloha!