Leather is one of the most difficult materials to remove stains from. Extra care and special treatment is required. Leather should be protected as best as possible, but sometimes stains are unavoidable. If a stain does occur, there are ways to remove it depending upon the type of stain.
Pour talcum powder directly onto a grease stain and leave it overnight. The powder will draw out the grease and absorb it. Wipe the area clean with a soft cloth the next morning.
Roll a piece of bread into a ball and use it to blot a water stain. The stain should come up as the water is absorbed into the bread.
Apply isopropyl alcohol to ink stains and rub with the grain of the leather until the stain is gone. Wipe the area dry with a clean soft cloth to remove any excess moisture.
Mix equal parts isopropyl alcohol and water and apply it to the leather with a clean soft cloth to remove mold or mildew. Allow the leather to air dry and avoid direct sunlight.
Mix a solution of 75 percent vinegar and 25 percent water and blot with a cotton ball to remove salt stains. Test the solution on an indiscreet part of the leather before using this method.