The Leather Institute recommends cleaning the spot with a leather cleaner, and following up with a combination cleaner-conditioner-protectant product. You can buy leather cleaners and conditioners online or from specialty stores.
You can buy ammonium hydroxide online or from chemical distributors.
You can pick up leather polish online or from certain big-name retailers. Check your leather polish bottle for drying recommendations. If you’re applying polish to a pair of leather boots or a leather handbag, hold the polish bottle up to the leather and see if it’s a good match.
Some sources suggest using saddle soap to clean your leather. [8] X Research source However, other experts, like The Leather Institute, don’t recommend this. [9] X Research source