Two-piece nozzle (1, 2) for aerosol dispenser, comprising - an outer piece (12, 22) provided with a tubular wall (121, 221) open on one side and closed on the other by a front wall (122, 222), thus forming a cavity, the front wall being provided in its center with an outlet opening (123, 223), the outer piece having a certain symmetry about an axis of symmetry, - an inner piece (11, 21) separate from the dispenser for which the nozzle is intended, said inner piece (11, 21) being dimensioned to penetrate into the cavity of the outer piece and be retained there, the inner piece having a front face (111, 211) facing the front wall (122, 222) of the outer piece, - channels (112, 125, 224, 225) being made in the cavity of the outer piece (12, 22) and/or on the surface of the inner piece (11, 21), wherein said channels open into a turbulence chamber (127, 227) in communication with the outlet opening (123, 223), the outlet opening (123, 223) being placed in the flow path of the product flow downstream of the turbulence chamber (127, 227), a protrusion (113, 114, 213', 214') being placed in the center of the front face (111, 211') of the inner piece, this protrusion being dimensioned so that its free portion opposite the front face (111, 211'), which portion is called torpedo (114, 214'), penetrates into the outlet opening (123, 223') to reduce its cross section and form an annular outlet orifice, the nozzle being characterized in that the portion of the outlet opening located near the outer face of the front wall (122, 222) has a frustoconical shape, and in that the end of the torpedo located opposite the front face (111, 211) has a cylindrical shape so that the transverse cross-section of the annular space between the outlet opening and the torpedo decreases as it approaches the outer face of the front wall (122, 222). - an outer piece (12, 22) provided with a tubular wall (121, 221) open on one side and closed on the other by a front wall (122, 222), thus forming a cavity, the front wall being provided in its center with an outlet opening (123, 223), the outer piece having a certain symmetry about an axis of symmetry, - an inner piece (11, 21) separate from the dispenser for which the nozzle is intended, said inner piece (11, 21) being dimensioned to penetrate into the cavity of the outer piece and be retained there, the inner piece having a front face (111, 211) facing the front wall (122, 222) of the outer piece, - channels (112, 125, 224, 225) being made in the cavity of the outer piece (12, 22) and/or on the surface of the inner piece (11, 21), wherein said channels open into a turbulence chamber (127, 227) in communication with the outlet opening (123, 223), the outlet opening (123, 223) being placed in the flow path of the product flow downstream of the turbulence chamber (127, 227), a protrusion (113, 114, 213', 214') being placed in the center of the front face (111, 211') of the inner piece, this protrusion being dimensioned so that its free portion opposite the front face (111, 211'), which portion is called torpedo (114, 214'), penetrates into the outlet opening (123, 223') to reduce its cross section and form an annular outlet orifice, the nozzle being characterized in that the portion of the outlet opening located near the outer face of the front wall (122, 222) has a frustoconical shape, and in that the end of the torpedo located opposite the front face (111, 211) has a cylindrical shape so that the transverse cross-section of the annular space between the outlet opening and the torpedo decreases as it approaches the outer face of the front wall (122, 222).