Most textile stains are the result of some foreign substance in the fibers, and the strategy for removing the stain is to take out the substance. When you get acetone on leather, nevertheless, it dissolves the natural oils and disappears — only traces remain to eliminate. The very best way to take care of an acetone stain on leather is to recondition the leather.
Not a Typical Stain
Acetone can leave a dark spot or a light one, based on whether it caused the natural oils to redistribute or just to evaporate. In either instance, there’s nothing you can eliminate from the leather to make the stain go away, so there’s no point rubbing the stain with a solvent or a synthetic paste; such procedures only make things worse. A better strategy is to restore the oils to the stained area or, if needed, to the whole piece of leather.
If the leather is about a piece of furniture covering the stain with mayonnaise may help. The olive oil in mayonnaise may seep in the leather and then replace the colour balance. Rubbing the entire article of leather with neatsfoot oil, a traditional conditioner, can blend the stain. Neatsfoot oil lubricates and protects leather, but it also darkens it. For additional cleaning power, mix 1 part white vinegar with 2 parts neatsfoot oil and rub this into the entire article of leather with a clean cloth.