Ah, the classic case of an ink pen versus an innocent leather sofa. A battle as old as time, or at least as old as the first time someone fell asleep doing a crossword puzzle on the couch. The context you provided mainly confirms you are not alone in this domestic drama, so let's dive into the common wisdom for this common catastrophe.
Before you unleash any chemical warfare on your prized seating, you must heed the golden rule: test in a hidden spot! Find a secret area under a cushion or on the back and apply a tiny amount of your chosen cleaning agent. We're trying to remove an unwanted pinstripe, not create an avant-garde bleached masterpiece. Patience is key.
Your first and gentlest line of attack is often rubbing alcohol. Isopropyl alcohol is the ink's natural enemy. Moisten a cotton swab or the corner of a clean white cloth with it, then gently dab at the pen mark. Don't scrub like you're trying to erase a bad memory; that will just spread the ink and potentially damage the leather's finish. The goal is to lift the ink onto the swab. You may need to use several fresh swabs to coax the ink out completely. Some old-school hairsprays work for the same reason—they contain alcohol—but stick to pure alcohol if you can to avoid sticky residue.
If the alcohol feels too aggressive for your particular leather, you can try a milder approach with a simple mix of saddle soap and water, or a dedicated leather cleaner. If the ink is fresh, sometimes a non-oily, non-alcoholic baby wipe can do the trick without any drama. However, if the mark is stubborn and you've exhausted these options without success, it might be time to wave the white flag and call a professional leather specialist. They have seen far worse and possess potions that we mere mortals can only dream of.
