A tip for a cosmetic eyeliner allows for the convenient and accurate application of cosmetic eyeliner. The tip comprises a generally elongate cosmetic impregnated or coated body shaped to define a nib at a distal end thereof. The nib is of generally triangular cross-section along an elongate axis of the tip so as to define two lateral faces meeting at a rearward edge thereof and a forward face between the lateral faces. The forward facing and the two lateral faces meet at a point at a distal end of the nib. As such, in use, the tip allows for the convenient application of eyeliner cosmetic wherein the forward face is configured for stamping a cosmetic wing shape and an outer edge of an eye when the nib is in a first angle of rotation.