The method proven in the forum begins with liquid bile soap, applied directly to the stain, left to act for about fifteen minutes and rinsed out with water. Treatment with a heavy-duty detergent such as Persil and a complete machine wash follow; after this procedure the stain is gone without trace, without the fabric being visibly stressed. As an emergency solution on purely white textiles, bleaching with chlorine is also mentioned, e.g. for table linen; collectors advise, however, to start with bile soap before resorting to the radical cure. On coloured or sensitive fabrics chlorine and aggressive ink removers are to be avoided.