The invention relates to a method for treating an elastomeric surface of a device for dispensing a fluid product said method including a step of modifying by ion implantation using beams of ions having multiple charge states and multiple energy states at least one elastomeric surface to be treated of said device said modified elastomeric surface limiting the adhesion of the elastomeric surfaces during the manufacturing and/or assembly phases said ions having multiple charge states being selected from among those of helium (He) nitrogen (N) oxygen (O) neon (Ne) argon (AR) krypton (Kr) and xenon (Xe) and the ion implantation being carried out at a depth of 0 to 3 �m.
