Abstract: A system and method for inscribing marks, that will remain non-discernable after tinting, on materials in general, and on plastic ophthalmic lenses in particular. The system uses a laser, which typically performs a heating-type inscription process, such as by use of a CO2 laser. In accordance with a preferred embodiment of the present invention, there is provided an apparatus for producing laser inscription on materials, including laser inscription apparatus for inscribing inscriptions on a surface of the materials, and apparatus for treating a zone of the surface that was affected by the laser inscription beam, to prevent it from absorbing excessive dye relative to other zones, wherein the inscriptions remain non-discernable after applying the dye.