Apply rubbing alcohol to a cotton swab. Rub the ink stain with the cotton swab in a circular motion until the ink is removed from the leather couch. Use a hairdryer set on the lowest setting to dry the leather. If the stain is still present, continue with the remaining steps.
Rub the ink with a lint-free cloth dampened with acetone-free nail polish remover. Continue rubbing the leather gently until the ink is no longer visible.
Rinse the residue left from the acetone-free nail polish remover by gently wiping the leather couch with a clean, damp cloth. Wipe the area dry with a towel.
Add a drop or two of a leather conditioner to a lint-free cloth. Rub the leather couch with the cloth. Allow the conditioner to sit for 30 minutes. Buff the leather with a dry, lint-free towel. During the ink removal process, the natural oils that keep the leather soft and protected are removed. Applying a leather conditioner will replenish these oils.