Leather Master Ink Killer is a last resort product designed for the removal of old ink stains on all leather types and permanent marker on Pigmented leathers. One of the strongest products in the Leather Master product line - this product must be used with extreme caution. Ink Killer is designed to get down to the leather and remove the ink stain from the pores of the leather. Color replacement will most likely be necessary. Check out Luxury Leather Repairs Automotive or Furniture Leather Dye for color touch up options.