An application member for a cosmetic product applicator, for applying cosmetic product to keratin fibres, and for applying mascara to eyelashes, said applicator member being obtained at least partially by moulding at least one thermoplastic elastomer material,
- wherein said thermoplastic elastomer material is a thermoplastic styrene having a tensile strength greater than or equal to 10 MPa,
- wherein the thermoplastic styrene material contains at least 15% by weight of polyolefin filler,
- wherein the polyolefin filler comprises polyethylene, and
- wherein the thermoplastic styrene material comprises less than 20% by weight of a filler, the filler being selected from CaC03, aluminium and its mineral compounds, kaolin, and zinc and its mineral compounds.