
The provided context does not contain specific instructions for removing felt tip pen from a leather sofa. However, based on general expertise in material care, here are professional recommendations for addressing this issue.
The key to successfully removing a felt tip pen stain from leather is to act as quickly as possible and to always test your cleaning solution on a small, hidden area of the sofa first, such as on the underside of a cushion. This ensures the method will not discolor or damage the leather's finish.
For a fresh stain, a simple solution of mild soap and lukewarm water can sometimes be effective. Dampen a soft, white cloth with the soapy water, wring it out thoroughly, and gently blot the stain from the outside in to prevent it from spreading. Avoid vigorous rubbing, as this can push the ink deeper into the leather. Follow up by blotting with a clean, dry cloth.
If soap and water are ineffective, isopropyl alcohol (rubbing alcohol) is often the next step for ink-based stains. Apply a small amount of alcohol to a cotton swab or the corner of a clean, white cloth. Dab the stain gently, being careful not to saturate the leather. You should see the ink begin to lift onto the swab. Use a fresh part of the swab for each dab to avoid reapplying the ink. Once the stain is removed, you can wipe the area with a slightly damp cloth to remove any alcohol residue and then dry it. It is highly advisable to apply a quality leather conditioner to the area afterward, as alcohol can dry out the material.
For persistent stains, or if you are hesitant to use household solutions, the safest and most effective option is to use a commercial product specifically designed for removing ink from leather. These cleaners are formulated to treat stains without stripping the leather of its natural oils or damaging its protective top coat. Always follow the manufacturer's instructions carefully. If the stain remains or if you are dealing with a delicate type of leather like aniline or suede, consulting a professional leather cleaning specialist is the recommended course of action.


