
Based on an analysis of the provided sources, it is not possible to construct a comprehensive guide, as the context is largely irrelevant. The YouTube link provides only standard footer text with no procedural information, and the Reddit source is a link without its content. Therefore, the following guidance is based on established principles for textile stain removal.
The successful removal of an old ink stain from a sofa is contingent upon several factors, primarily the type of ink, the composition of the upholstery fabric, and the age of the stain. The first critical step is to identify the sofa's fabric type by locating the manufacturer's cleaning tag, which typically features a code (e.g., W, S, W/S, or X) indicating the appropriate cleaning agents. Before applying any solution, it is imperative to test it on an inconspicuous area of the sofa to ensure it does not cause discoloration or damage to the fibers.
For many common ink types, particularly those that are oil-based, a solvent-based approach is often effective. Isopropyl alcohol (rubbing alcohol) is a widely recommended solvent. To begin, lightly dampen a clean, white cloth with the alcohol. Using a blotting motion, press the cloth onto the ink stain. It is crucial to blot rather than rub, as rubbing can spread the stain and drive the pigment deeper into the fabric. Work from the outside edge of the stain inward to contain it. As ink transfers to the cloth, reposition to a clean section to avoid redepositing the stain. This process may need to be repeated several times. Since the stain is old, the ink has likely set firmly into the fibers, which may require significant patience and multiple applications.
After the ink has been lifted, it may be necessary to address any remaining residue or solvent. If the fabric's cleaning code permits water (W or W/S), you can blot the area with a separate cloth dampened with a small amount of water to rinse the alcohol. Finally, blot the treated area with a dry, absorbent towel to remove as much moisture as possible and allow it to air dry completely. For fabrics designated with an "S" code (solvents only) or "X" code (no liquids), professional consultation is strongly advised to prevent permanent damage.


